Tag Archives: Colour

Give your holiday landscapes a little extra punch

How to make a digital camera

How to make a digital camera

Do something different with your summer shots.

Holiday times always give us a chance to capture a few landscapes. Often they are a more difficult to get right than is appreciated. In fact a little thought can make all the difference. Think about your composition and your colours. The key to a good landscape is to find impact and contrast. In the video below Gavin Hoey shows you two things. First he shows how to think about your composition and colours. Next in the context of colours he shows how to turn your landscape into black and white in Photoshop (actually you can use any full featured image editor to do the same thing).

B&W Landscape Tips


AdoramaTV

Making black and white images

In the video Gavin Hoey made a great point about shooting in RAW. Landscape pictures often look great to the eye when in the field but they lose their appeal when the image is created on-screen. So in order to make your landscape pop some post processing is essential.

This video shows how to bring out contrasts to make the scene look great in black and white. However, he makes an important point about shooting in RAW. You don’t lose the original colour, it is retained in a RAW file. Then you convert to black and white afterwards. This is not possible in *.jpg. That format does not have the colours stored like the RAW format. If your black and white *.jpg is less than successful you lose the colour option too.

Gavin Hoey points out that you should test that your camera will process a RAW file in monochrome mode on its screen, but still leave a full colour RAW file. It is possible your camera converts the RAW file to a *.jpg file in the colour scene mode. So cover your options and try it before going in the field.

Gavin showed the conversion method to black and white using the colour sliders. Most image editors have two basic ways to create monochrome shots. Your shot can be simply colour converted to shades of grey, or you can use the colour slider method where you have some control over the intensity of colour which greys are created from. This latter method gives you much greater control over the contrasts in the picture. When working in monochrome that is the most effective way to ensure the picture has visual impact. So always choose the colour slider method to get better control of the conversion.

There are some additional links below to show how to improve your black and white shots in other ways.

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By Damon Guy (author and Photokonnexion editor)

Damon Guy - Netkonnexion

Damon Guy (Netkonnexion)

Damon is a writer-photog and editor of this site. He has run some major websites, a computing department and a digital image library. He started out as a trained teacher and now runs training for digital photographers.
See also: Editors ‘Bio’.

How to take photos – each important step in making a photograph

Infographic download - How to take photos

• Infographic showing the various steps in how to take photos •
A guide to what you should doing to make great images.
• Click to download printable full page version

Getting down to the detail…

Yesterdays article was How to take photos – each important step in making a photograph. Today I want to share the detail behind each step. Be warned! You might need to think again about your existing knowledge. Unlearning old ideas will help you to move forward and improve.

How to take photos – The location

Lots of people think you can just turn up and take pictures. Well you can, but often they are not good ones. Getting the best out of your location involves understanding what you’ll find there. Find out about the weather on the day. An idea of light levels and times of sunset and sunrise etc. is useful too. There have probably been lots of visits by others at popular destinations. Check “Google Images” for that site. Google will help with other details too.

When you arrive don’t just fire off loads of shots. Settle down and get into the location. Don’t make photography mistakes that mean you miss great shots. The first time you do this consider a variety of shots. Think about more than one shot, think about the whole shoot.

How to take photos – Examine the scene

Considering the scene is an important part of the work-flow on site. Unless you have been there before you need to get to know it. Use all your knowledge about camera angles, composition, lighting, camera settings and so on. Take the time to examine your location while thinking of these things. Consider your feelings about the scene too. How you feel will help your shot be an impassioned response to the location. What you feel about the scene is the best guide on how to take photos at that location.

How to take photos – Review the light

Most photographers forget this step. They are too wrapped up in the scene and the camera settings or the passion of it all. This step will make or break your shot. Look at the light. If you don’t know what I mean read these:

Ask yourself some simple questions about the light…

  • Is it hard or soft?
  • Is it coloured or more neutral?
  • Is it at the right angle to best capture the location/scene?
  • What is the best time for the right light?
  • Is it very bright and intense or dull and diffused?
  • Do I need any artificial illumination (flash, diffusers etc)?
  • Is the shadow hardly defined (sun up high) or strongly defined (sun to the side)?

Lean about the properties and vocabulary of light. It helps give you a greater understanding of photography. These questions, and others, help you make decisions about lighting for your scene. For more on “How to take photos – Light and Lighting” see the resource page in the SUBJECTS/ARTICLES menu at the top of every page.

How to take photos – Create a mental version of the the shot

If you want to make a great image – have a great picture in your head of your intended outcome. Visualisation has helped athletes, artists, thinkers, inventors and others to achieve amazing things. Train your mind to visualise in detail. If you see what you want to achieve it will guide you when setting up your camera. Take the time to create that mental picture – in detail. Consider how you are going to make the best of the light when you consider how to take photos. More about visualisation… 80 year old secret of world class photographers revealed.

How to take photos – Compose the shot

By now you have an intimate photographic knowledge of your scene. Composing the shot is about realising that potential. Long-time followers of this blog already know something about composition. For first-timers you can get lots of information from our Composition resources page in the SUBJECTS/ARTICLES menu at the top of every page. Composition is a skill that evolves as you develop as a photographer. Knowing more about composition helps your awareness and skill develop. Read about it to gain insight. Think about it every shot.

How to take photos – Review and adjust the camera settings

Now you have a picture in mind, composed, and are ready to set up your exposure. The exposure is defined by your camera settings. Camera makers will have you believe that the auto-setting on your camera is the perfect exposure. The fact is they made informed guesses to arrive at that exposure. It is different for every model of image sensor. Modern cameras do make a good representation of the scene. It is not always what you want however. You can change the exposure by under-exposing, over-exposing and by using different apertures, ISO levels and shutter times. That is your interpretation of the shot. When you think about how to take photos, plan how you want the image to come out.

Having a visualisation in your head helps you set the camera up to make that mental image. You do it using ISO, Aperture and Shutter speed. Even using one of the ‘mode’ settings is still a way of regulating your exposure. They all adjust those three basic facets of the exposure.

Here are some other links to pull together ideas about exposure:

How to take photos – Stabilise the camera

You want the photo to be sharp, crisp and clear. The faster the shutter speed the easier it is to get a sharp shot. But often, especially for a good quality shot, longer exposures are better. You need a good stance to hand-hold the camera. You will need a tripod (or other method) to steady it for longer exposures.

Stance is down to basic technique and comfort. The stance you use will be a personal thing for you. I have found many photogs have to relearn their stance after many years of a poor stance. It is best to learn a good one early. Here is my recommendation: Simple tips for a good stance

The use of tripods or other supports is a wide subject. It is also one that many learners tend to ignore- at least at first. When learning how to take photos sharpness is vital. Become acquainted with a tripod (preferably a good one) as early as you can. Your images will improve a huge amount. Here is some advice about tripods:

And, here is some basic advice about improving sharpness overall – The Zen of sharpness – 12 easy ways to improve

How to take photos – 15 second check

OK, that may seem like a long time. However, it is actually the time you need. You can get faster at it, but if you are taking a serious attitude to your shot then give it the time. You can find out all about the the 15 second check by reading these in order:

  1. An old sailors trick to improve your photography
  2. The fifteen second landscape appraisal
How to take photos – “Click”

This is where you press the shutter button. How you press that button can make a difference to your sharpness. Earlier, I mentioned this link, Simple tips for a good stance. It also gives advice on pushing the button without affecting sharpness.

An essential element of your shot is about confidence in what you have done. Today we are lucky. We just look at the back of our camera. Your first “click” may be a test shot. If your settings need adjustment then a simple technique called “Chimping” will help. Chimp and adjust. You will only need to do it a few times to get the shot right. You will not need to machine-gun the site with hundreds of “just in case” shots.

How to take photos – Work the scene

Chimping helps you set up for the shot and compose it. To get other possible shots you visualised earlier, you should work the scene. Repeat all the steps you have just done for each of the shots you foresaw. Working the scene is a skill and takes practice.

How to take photos – Time line

What is not obvious from the diagram is that the diagonal arrow is also a time-line of the shot. Of course it is a different length for every shot. You will have different problems to solve and ideas to consider for every shot. That’s fine. You have just learned a more careful, precise method for how to take photos. As you practice will quickly get faster at taking shots. But you will also make better images.

A promise

I can guarantee that if you follow the steps on this page you will…

  • Take less shots;
  • Get a better hit-rate (more usable shots per shoot);
  • Spend less time in post-processing;
  • Have better composition;
  • Improve your photography overall.

What is less obvious is that you will also save a lot of time.

By Damon Guy (author and Photokonnexion editor)

Damon Guy - Netkonnexion

Damon Guy (Netkonnexion)

Damon is a writer-photog and editor of this site. He has run some major websites, a computing department and a digital image library. He started out as a trained teacher and now runs training for digital photographers.
See also: Editors ‘Bio’.

How to get the sky right in your holiday pictures

Cornish Vista

Cornish vista
Think about how to get the best out of your sky.
Cornish Vista • By Netkonnexion on 365ProjectExternal link - opens new tab/page

Getting the sky right is important.

With the holiday season approaching we want our holiday photographs reflect the happy memories. All too often the sky is over-white, washed out or blown-out. There are a number of techniques you can use to get the sky right, in camera and in post processing.

What are you really looking for in a good sky? Deep blues for the sky, fluffy white clouds and well defined horizons are the ideal situation. To get them like that in the camera you have to pay attention to the time of day, the type of sky, the weather and have a sense of drama. Here are some ideas to help you…

Polarizing Filter

One of the photographers important tools for sky photography is the polarizing filter. It is a glass or composite material that is set into the inner of two metal rings. The first ring screws directly to the front of your lens. The other rotates inside the screw ring. The filter itself cuts out some of the wavelengths of light. You turn the ring with the filter mounted in it so that it can be set for maximum effect. The filter action reduces the glare and haze associated with reflective surfaces like water and glass. Amazingly it also deepens the blue in the sky. So what we see in the photograph is a sky that is darkened with emphasised blues and the air has a crispness and clarity. These effects are not reproducible in post-processing software. It is invaluable to have this effect in camera and will really liven up the drama of the sky.

Critical view-line

If you gaze out across a wide open sky on a bright sunny day you will notice that the blueness of the sky is not uniform. It is a deeper blue in places and a whiter blue elsewhere. In fact the sky gets to be a deeper blue if you are facing away from the sun. It is at its deepest blue at the opposite end of the sky from the sun. So where you can, shoot with the sun at your back.

Of course having the sun at your back is not always possible. A good rule is not to let the sun be in front of you. If it is at your shoulder (90 degrees to your shot) it will still allow you to get a reasonable blueness in the sky. If you have to shoot with the sun in front of you, even if at a wide angle, the blues will start to whiten. The more you are shooting toward the sun the more the sky will wash out.

The mid-day washout

During the middle of a sunny day the sky will be at its most washed out. As the sun is at its highest at this point you should avoid taking photographs if you can. The more the sun falls toward the horizon the more the atmosphere will act as a natural filter and increase the blues at the opposite end of sky. The middle of the day is also bad for photography because the sun being overhead means that objects on the ground have little shadow around them. This gives the landscape a flat and unappealing look. Washed out skies and flat appearance at ground level makes convincing photography difficult!

Use an ND graduated filter

Neutral density filters are great. They are fun to use and give you back some of the blueness in the sky caused by over brightness. They don’t enhance the blueness like the polarized lenses. They are a way of cutting the light down so its intensity is reduced.

Without an ND filter the sky will tend to be over-bright, or the ground will tend to be too dark on a bright day. The graduated ND is an ideal tool for helping to balance the light levels. A full ND filter will reduce the incoming light right across the lens. However, a graduated ND filter allows the full amount of light to enter the lens from the lower half – which keeps the foreground bright. On the upper half of the filter (pointing at the sky) the neutral grey graduates from the very light across the middle to its darkest at the top of the filter. You place the beginning of the neutral grey on the horizon and then the grey graduates darker up the filter so the most washed out or over-exposed parts of the sky at the top of the picture are the parts with the most reduced light levels.

It is worth remembering that you can use both an ND graduated filter and a polarizing filter. However, also remember that each time you put a glass element in the line of light you will be reducing the light that can get into the camera. So remember to adjust your exposure to compensate for the additional glass.

The use of ND filters helps to bring out the clouds too. Brightness in clouds can be pretty harsh, especially if they are very dense. This tends to make them featureless. The use of ND filters for clouds (an ND 2 or 4 – the lowest filter levels) will help to reduce the brightness and enhance the contrasts in the darker parts of the cloud. This brings out its features and helps the cloud to take on a little depth.

Post processing sky enhancements

In post processing you can do a number of things to enhance your sky. However, after years of working on my skies I know that you can get better results in camera… try that first.

On trick to enhancing a washed-out blue sky is to use a saturate tool. Simply wipe the tool across the blue of the sky to deepen and lift the crispness of it. The saturate tool in most image editing applications tends to turn sky blue to turquoise blue. Don’t use full saturation. Set your saturation tool to between 10% and 20% and wipe it several times rather than one heavy wipe. With most tools/brushes it is better to use low exposure/opacity rather than be heavy handed. Not only is it more controllable but you can also build up to a reasonable blueness without over-doing it.

You should watch out that you do not wipe the saturate tool over the clouds. You will find that the clouds look white, but contain a high blue component. If you saturate them they turn blue to the eye – which looks highly unrealistic.

The trick to increasing the contrast in clouds is not the saturate tool. It is to deepen the grey of the darker parts of clouds using the burn tool. The burn tool darkens a colour by increasing its black component. Again, with the burn tool use a reduced exposure. I like to work with about 15% in clouds. Set the tool to mid-tones so the grey parts of the cloud don’t turn black. The idea is to increase the contrast not to give the clouds harsh deep lines – that would hardly match with the surrounding blue sky.

Blue sky thinking

If you really want to get the best skies then work later or earlier in the day to get lower wash-out levels in the sky. Make sure that where you can shoot away from the sun = especially toward the horizon with the sun at your back. Where brightness levels are high and you have to shoot you can reduce the wash-out with polarization and ND grad. filters. You can also post process the skies after your shoot, but this is not as easy as it sounds.

True blue-sky thinking is done before you take the shot. Deploy all the suggestions above and your skies will be blue. Have a happy holiday.

By Damon Guy (author and Photokonnexion editor)

Damon Guy - Netkonnexion

Damon Guy (Netkonnexion)

Damon is a writer-photog and editor of this site. He has run some major websites, a computing department and a digital image library. He started out as a trained teacher and now runs training for digital photographers.
See also: Editors ‘Bio’.

The secret to world travel – but staying at home!

• Winchester Cathedral Chroma key image•

• Winchester Cathedral •
Chroma key work is quite easily done in Adobe PhotoShop and a range of other quality photo-editors.

When you want to be somewhere else…

There are places we would rather be than where we are now. I would like to be on an island paradise …not going to happen! But you can do it photographically. The secret is something called Chroma Key photography or green screening.

Chroma Key Substitution

In chroma key, often known as “green screen” photography, the subject is photographed against a uniformly lit green background. Then, in post production the subject is easily selected out from the green background. The selection can then be pasted into any other photographic background.

Any uniform colour can be used as a backdrop for the chroma key shot. The picture above is selected from a blue background and pasted into a picture of Winchester Cathedral in SE England. The two pictures were taken on different days.

To make the selection of the subject from the background it is important to light the background evenly. When the colour is even the selection is easy and can be completed in one operation. Colour variations from uneven light make it more technical to isolate the subject.

Green is the most frequently used colour in chroma key photography. The colour is very easily separated from human skin tones. Where the subject has green tones, blue is often used as the chroma key alternative. Blue is a common colour for clothing. It is therefore less suitable than a strong bright green which is not so popular as a fashion colour. However, green does have other advantages. The human eye is able to see more shades of green than any other colour. This makes it easy to see variations in the green when setting up the lighting. Green sensitivity is also built into software applications to match the abilities of the eye. This helps us to work with the background when doing awkward selections.

Fun and games

The substitution of a subject into any other photographic background provides great opportunities for doing fun things. Film stars can be placed in your garden. You can apparently travel the world without leaving your front room. Just find the right pictures and substitute yourself into the background of your choice.

Of course there are also opportunities for advertising, graphic art, product photography, still life, portraiture, action shots and many other false situations. Of course we should be careful not to be immoral about such things! Feel free to have fun though. You can really make it look like you have traveled the world.

How is it done?

Basically you need a chroma key background, lighting to illuminate it evenly, a camera and a subject. On a small scale this is easy to do. A lot of people doing chroma key work for the first time start with still life or table-top photography to get the technique right. Probably the most common use of the technique is for portraiture. Take a picture of yourself or your friends and then start playing. For this you need a larger screen…

The video is a complete introduction to the use of chroma key photography. You can take the same techniques and scale them to any size. The video introduces the ideas you need to grasp and shows how to set up the lights and the equipment. It also shows one of the software applications. After the video I will briefly look at that software for you.

How to Green Screen (Chroma Key) with Photography!

markapsolon  External link - opens new tab/page

Software

There is a whole range of software that is capable of doing chroma key. In essence chroma key software has two jobs. The first is to select the subject off the green background (or whichever colour you are using). The second is to successfully blend the abstracted subject with the new background.

The software from the video is called PhotoKey from FXHome  External link - opens new tab/page. It has been produced specifically for chroma key compositing. It is not alone in the market. However, there are not many applications specifically aimed at this work. Instead there are plenty of applications that do chroma key blending as part of a general suite of editing tools. There are also plugins for the same process to go into your favourite image editor.

The actual process for producing the final blended image is relatively quick and easy in most of these chroma key applications. The tools are usually quite self explanatory if you have some editing experience. As with any editor, you normally find the blending tools manage colours, contrasts, edging and so on. Ultimately you are creating a blend of the two images, but the best chroma key tools go further. At the end of working through the blending process you can make further changes in a good software suite or plugin. If you are satisfied with it you should be able to export your image to make a .png, .jpg or .tiff image.

The way to do it in Adobe PhotoShop

The general photographer is most likely to have use of a quality image editor like PhotoShop, Elements, GIMP, PaintShopPro and others. All these are able to do the type of work that PhotoKey can do. Admittedly it takes longer. But for beginners it is better to save your money for more general photography kit. For those who are interested, here is a short video explaining the Photoshop method of doing a chroma key composite. It is a simple technique using standard photoshop tools.

Isolating with a Chroma Key Background

This tutorial is aimed at Photoshop intermediate level users.

Overall…

Chroma key work is fun. There is quite a lot to learn, but it adds flexibility to your photographic work and post processing. The use of up to date quality image editors is probably better than splashing out on expensive specialist applications. Nevertheless specialist applications do a great job, saving time in post processing.

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Easy ideas for controlling your flash unit

Specular highlights

Bath toy
Specular highlights are distracting and draw the eye which spoils the shot.

Flash is a great benefit and a problem all at once!

Most people don’t realise two things about flash. First, the standard setting is nearly always too powerful. Second, the highlights resulting from flash are very distracting.

Working with flash power

Like all things in photography you need to think carefully about using flash. It is not simply click and move on. Most improving photographers are just beginning to make shots rather than snaps when they begin to see the quality and colour of light. So it is easy to miss some of the impacts that flash has on a subject. Here are a few consequences of a flash shot…

  • An over-bright subject.
  • Strong highlights with a tendency to wash out colours.
  • Specular highlights that create sharp, bright spots that distract the eye.
  • Bright foreground, dark background.
  • Flesh tones strongly whitened giving a sick look to the face.

Each of these is almost always down to using too much power in the flash. So, the way to over come these issues is to do two things. Turn down the power of the flash and diffuse the flash so it scatters the light.

Turning down the flash is simple. You must find the setting that adjusts the flash power level. This is easy if you are using an off camera flash because the unit usually has a display and a dial or buttons to change the settings. On-camera (pop-up) flash is usually adjusted by finding a menu setting that turns the power up or down. You may need to consult your camera manual to find where that setting is found.

The key to getting the right setting for your flash is to understand how to change it. Most off-camera flash units are marked up so there is two stops of light on the flash. Normally if the flash is marked 1:1 then that is full power, and more often than not this is the default setting. You can usually turn this down by one third of a stop of light at a time. Each time you stop down the setting one stop you are halving the light it emits.

Pop-up flash units may not be marked so clearly. Some are marked [low – medium – high], others, particularly point and shoot cameras, may just have “full | half”. More sophisticated pop-up units may also be marked in the same way that off-camera flash units are marked. Which ever your flash is, you should practice with it so you have an idea of how powerful it is and how much the settings can change the impact of the flash.

Flash diffusion

The best way to get used to using flash and controlling the power is experimenting. However, the issue of nasty highlights is the other problem the inexperienced user often does not spot at first. Strong highlights raise the light levels so you can see the tonal changes in the colour of the surface the light hits. This helps to define the shape of an object. So, for example, a brighter top on a ball and dark shadows under it help to define the spherical shape.

If the light intensity is too high, particularly on reflective surfaces, the reflected light level will exceed the level the camera can cope with. The highlight then becomes blown out. The light is so bright in that area that it becomes a bright spot where all the detail is lost to pure white. Unfortunately such strong, blown out areas, are severe distractions. In the picture above, the small reflective points, called specular highlights, are also strongly distracting. So what can you do to avoid these nasty effects?

If your power adjustments are not working and you still have blown out spots or highlights then you should consider diffusing the flash. This makes a difference in two ways. The diffused light will scatter the light from the flash over a wider area. This effectively lowers the light intensity even further in the area of the highlight since the light is not hitting it from a direct focused hard light from the flash.

Secondly, diffused light spreads the effect of the light. This makes it more likely to bounce off other surfaces nearby. These surfaces then become multiple mini-light sources. All these sources hitting your subject create a soft light which is much less likely to create specular highlights or very strong colour-destroying highlights.

So how do you do this diffusing? I just love this great flash diffuser. Designed to fit your off-camera flash unit it is an ingenious design and easily adaptable to any flash unit. Check out the Rogue FlashBender 2 – off camera flash. If you have an off-camera flash this is the best. It is the most adaptable diffuser I have ever used. You attach it to the flash with a wrap around grip. The big diffuser stands up above the lens of the flash. It is tough, flexible and creates a lovely daylight-white light. It is superb for portraits and still life work. Coupled with adjustments to the power settings on your flash it gives you excellent control and helps reduces highlights and the effects of hard light direct onto the subject.

For off camera flash there are a range of diffusers available. They are based on various different mounting or reflector principles too. So, you need to look around to see if you can find a diffuser that suits you.

For pop-up flash the options are not as easy. However, I recommend one of two options. I have successfully used ordinary white tissue paper sticky taped over the pop-up flash to both reduce and diffuse flash. However, while this works well, reducing the light by about a full stop, it is a temporary solution. Also, if you use the flash a lot the extra insulation may cause the flash to over heat. So, not for regular use.

My favoured options for pop-up flash diffusion are one of these three methods…

Professor Kobre’s Lightscoop, Standard Version Bounce Flash Device, Universal Model, fits over the Pop-up Flash of most SLR Cameras This diffuser produces a very effective ceiling bounce for the diffusion. However, make sure that in rooms where you use it there is no strong colours on the ceiling or it will cause colour casts.

 

Gary Fong Puffer – Pop-Up Flash Diffuser for Canon / Nikon / Pentax / Olympus / Panasonic- Lumix pop-up flashes A well reviewed unit, and has the advantage of an easy fit. The other advantage is that it diffuses the light moving forwards. The other two units here bounce the light which puts you slightly at a disadvantage in controlling the flash light direction.

 

Cateye LETS Flash Reflector/Diffuser Hybrid, for use with DSLR pop-up flashes Although I have not used this one personally, I know some people who have. I have had some very good feedback on this unit and it seems to work effectively in a wide range of situations.

 

Great shots with flash…

Yes, like everything else in photography, to get good with it, you have to practice use of flash. However, first you need to make sure you can spot the highlights, specular highlights and over-powered flash. Once you know what you are looking for you can adjust your flash power.

The best way to gain control of your flash is reducing the power, or at least adjusting it. Also, the more you soften the harsh, hard flash light the less distracting and natural the highlights will be.

Whatever you decide to do to make your flash manageable do plenty of experimenting to gain control of the light. Don’t forget to Examine Shots Before Shooting Again – “Chimping” to check for highlights. The practice will pay you back in great, well lit shots many times over.

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By Damon Guy (author and Photokonnexion editor)

Damon Guy - Netkonnexion

Damon Guy (Netkonnexion)

Damon is a writer-photog and editor of this site. He has run some major websites, a computing department and a digital image library. He started out as a trained teacher and now runs training for digital photographers.
See also: Editors ‘Bio’.

Thinking about colour

What do we really see? Do you and I see red the same?

What do we really see? Do you and I see red the same?

Can you and I agree on colour?

Do you and I see the same colour when we look at a red object? We may be seeing completely different hues, or tones. There is no way to objectify colour. We see it, have have name for it, but we cannot agree that we see exactly the same thing. What we see is an internal experience and we cannot share it with other people.

White balance

When we see a photograph taken under the influence of a tungsten or fluorescent light we can clearly see the colour casts. Modern DSLRs have standard white balance settings to neutralise these colours as they are so common. What about colour casts that are not so common? Well, in that case we need to set up a custom white balance setting.

The problem is, we do not have an objective measurement of colour that means the same to everyone. However, if we can standardise colour against something, then we would have a way of sharing a colour on a fixed basis. You may see a slightly or very different colour to me. But when you do, if it is standardised, it does not matter. That’s because we can both agree on it against the same standard.

Light which may appear white to the eye is not necessarily an even distribution of colours. The visible colour spectrum contains a combination of colours which together form white. The various colour temperatures in that mix are manifest at the different colour wavelengths. In photography we use a neutral grey (18% grey) as a calibration point that represents the 50% point in the eyes’ contrast range between brilliant white and perfect black. We can use this grey level to allows us to neutralise colour casts generated by sources which are not on the white light spectrum.

How do we neutralise these colour casts using 18% grey? Well, if certain scenes are slightly off colour or we are unable to create a clean white in a white environment there is probably a colour cast or the camera is compensating for too much brightness. For example, it’s common to have grey snow if the camera overcompensates for brightness in the whites. If we calibrate the camera for a custom white balance we can set white settings to be true to the scene in which the grey card is used. To establish the calibration point we photograph the 18% grey card within the light that contains the colour cast. Then we set the 18% grey point to be correctly grey (18%) and this will even out the colour cast. Check your manual for the exact procedure for your camera model.

Of course this assumes that the manufactures got the colour range-calibration correct. However, there is good evidence that we all agree the calibration points produce consistent colour results. So, if we calibrate the camera to the 18% grey card in the ambient light (with colour cast) the same camera colour range will shift from the colour cast to make the camera see the card as 18% grey again. The adjusted colour is a custom white balance – but it adjusts the colours to be consistent with the grey card standard.

Is Your Red The Same as My Red?

In the video we see that it is difficult to agree on the colour match between people. The video shows how different people can see a colour in a unique way but still agree on the existence of the colour even though our experience of it can differ. However, in reality we can only behave as if we agree that colours are the same. We do not have actual knowledge they are same to everyone. Hmmm! Mind bending… but worth thinking about

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The nature of shadows – ideas and inspiration

Shadows are most important in photography.

Without shadows the everyday shapes we see would be ill-defined. It’s shadows that help to give shape to the objects we view. They can also be the very essence of the picture. In this post I am going to look at different aspects of shadows as the subject of the picture. They can be extraordinary elements, message carriers, central attractions or complementary features. They are major influences in our art, sight and our everyday lives. I hope you will be inspired by shadows and appreciative of them as a strong compositional element in your photography.

What is a shadow?

Shadows help us to see. They are not an absence of light (darkness). It is the reduced light in a shadow that creates the contrasts that the eye picks out. In fact the camera does too. Where shadows are well defined, and contrast to the other light around them, we see a lot better than when there are few shadows and very bright light. Brightness makes it difficult to see things because the contrasts are absent and we can’t make out edges or three dimensions either. The variations in light intensities across an object tell us about its shape. If everything was in uniform brightness shapes would disappear.

Aesthetics and shadows

Shadow, and its counterpart light, are the medium of our vision. Decoding the light/shadow relationship is as stimulating as the pleasure of touching a sensuous surface; the electric excitement of a tantalising taste; being immersed in a powerful smell, or mellowing in the caress of a musical experience. Little wonder that as one of our five senses our understanding of light and shadow is also a deep part of our understanding of beauty and ugliness.

Seeing shadow

Of course our eyes sometimes misinterpret shadows and we make mistakes about them as with anything else. So it’s fun to consider the implications of false statements in shadow. In this first picture the shadow as the carrier of a message, but also the shadow as illusion. Shadow views of this sort bring out dark emotions and “shadowy” thoughts, but are also great fun artistically…

366 • 65 • Shadow monster by Pragmagraphr, on Flickr

366 • 65 • Shadow monster by Pragmagraphr, on Flickr
366 • 65 • Shadow monster by Pragmagraphr, on Flickr External link - opens new tab/page

In his notes on this picture the author says… “I have a lot of school work hanging over me like a shadow.” The visual pun is interesting and conveys a great message.

We love it when something appears as one thing and turns out as another. One of the endearing attributes of shadow is the other side of the visual story. In this next picture the lovely shape and bright eyes of this animal convey it’s essential “catness”. But the shadow is something different. The author says… “Her shadow makes me think about a French bulldog – with a tail” … shadows easily take on different meanings.

Flibberty and Her Shadow by peter_hasselbom, on Flickr

Flibberty and Her Shadow by peter_hasselbom, on Flickr
Flibberty and Her Shadow by peter_hasselbom, on FlickrExternal link - opens new tab/page

Of course shadows can be so much more than just a passive message. In this next picture the message is clear and the visual pun means so much to an English-speaking person. A clever use of shadow as the subject.

Shadow of 'a doubt' by Jon Downs, on Flickr

Shadow of ‘a doubt’ by Jon Downs, on Flickr
Shadow of ‘a doubt’ by Jon Downs, on FlickrExternal link - opens new tab/page

While the subject of a picture may not be the shadow there is still an important complimentary part to play by the shadow. The cobalt blue of the shadow in the next picture creates a wonderful tonality. The shape of the object is defined by the shadow, but it is the blueness that makes the statement. The author acknowledges that fact by his title…

If you can write a visual story with your photograph you pull the viewer directly into the shot. In this next picture the shadow and its disembodied juxtaposition on the ladder brilliantly conveys a set of meanings that we, the viewer, impose. The interest is the simplicity of the picture and yet the complexity of the possible meanings… fireman, escapee, workman, who is he? The interpretations are endless…

Shadow Climbing the Ladder at Sunset by S@ilor, on Flickr

Shadow Climbing the Ladder at Sunset by S@ilor, on Flickr
Shadow Climbing the Ladder at Sunset by S@ilor, on FlickrExternal link - opens new tab/page

Shadow and silhouette are closely related. The dark-side of a silhouette is the result of blocked light, as is the shadow. Normally the statement made by a silhouette is in its shape. I like this next picture because the silhouette is betrayed by the darkness behind it. The hard light and low light-source has lengthened and strongly defined the shadow creating a strong subject. It has become all the more threatening because the silhouette is only partially seen. What is there – is there a threat? Are we being menaced by our imagination misinterpreting the shadow… This is a clever interplay of light and of mood. Nicely done…

Shadow. by David Giron, on Flickr

Shadow. by David Giron, on Flickr
Click image to view large
Shadow. by David Giron, on Flickr External link - opens new tab/page

Shadows can convey much more than just mood. They create a picture themselves, but in a minimalist way. The two dimensional aspect of shadow is only partially compensated for by shape. We know that we can so easily misinterpret a shadow. So it is a relief when the meaning is implied without threat or misinterpretation.

Shadows and intimacy are frequently associated. Above, the closeness of the characters shows intimacy. In the next picture the intimacy of the boudoir is so strong that the viewer is relieved by the pattern of shadows to redirect the mood.

Shadows by Pablo Miranzo

Shadows by Pablo Miranzo.


The author says this is one of a series of pictures intended to contrast light and dark and is in black and white to simplify the composition. Oddly enough the composition is simplified by that, but complicated by the opposing mood settings. An interesting picture of mixed tensions.

The interplay between textures is important. While the shadow is a major part of many subjects, sometimes it is not the only subject. Look out for pattern shots that are uniform across the shot until you allow yourself to be drawn in. Often pattern shots have some compositional element to break the pattern, something that draws the eye. Wood grain and the subtle variations in the rhythm of its lines create micro textures and variation providing relief from the pattern, for example. It is that which draws you in.

Texture is an exciting aspect of any picture. It is created by the subtle tonal variations of light and shadow at the micro-level in the picture. If you see a texture and it convinces you that you would feel the texture if you touched it then the picture has convincingly been created as an image in your mind. In this next picture the image I see is all texture. The wonderful curve of the stair rail and its counterpart, the twisted shadow, combine to create great depth in this picture. The combination gives you the feeling that you can reach in and touch… A great image.

The stairs in the next image are pretty minimalist in themselves. However, the elaborate pattern of light and shadow created by them is exquisite. It is a wonderful example of how shadows transform a picture. In this case the shadows have turned the purely mechanical geometry of the stairs into a complex of pattern and curves. It is a wonderful play-off between the simplicity of one and complexity of the other…

Pulling it all together

The shadow as a subject is clearly a compositional feature. It adds to the texture of the shot too. The clever use of shadow can also add a message and/or impart mood as well. Sometimes though, it all just comes together. If you can combine mood, subject, story, composition and texture you have really made the grade. Your picture comes alive in the mind of the viewer. You have truly created an image. To do all this using just shadow is a clever and precious creation. I think this next image is one such example…

Using shadow as a subject is challenging but worthwhile photographic pursuit. Shadow gives you all the essential elements of a good photograph but supplies it with simplicity and meaning if done well. There are untold interpretations and subjects out there for you to tackle. I hope that I have inspired some new thinking on the subject.

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By Damon Guy (author and Photokonnexion editor)

Damon Guy - Netkonnexion

Damon Guy (Netkonnexion)

Damon is a writer-photog and editor of this site. He has run some major websites, a computing department and a digital image library. He started out as a trained teacher and now runs training for digital photographers.
See also: Editors ‘Bio’.