Tag Archives: Bokeh

Bokeh – The Pretty Confusion

Burning the midnight oil

• Burning the midnight oil •
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Bokeh is an essential component of some images.

Blur quality

Bokeh is the wonderful quality of blur you can create by not having part of your image in the depth of field. Blur is an essential compositional feature and something that every photographer should know a little about.

Bokeh is about blur quality

The latest entry into our Photography Glossary is: Bokeh.

Aperture – Mind the gap please!

Understanding the F stop

The aperture - a fundamental concept if you want to 'Go Manual

Aperture – Part 3 in a series about “Going Manual”

Previously, we discussed the sensitivity to light of the Digital Image Sensor. By changing the ISO we can adjust the camera’s ability to cope with bright or dark situations.

The Diaphragm controls the size of the aperture

In this article we look at the aperture, the second point of camera control. In the photographic lens unit of most DSLR cameras is the iris diaphragm. It is a circular fan of blades that slide across each other. As they slide, they open or shut the aperture in the middle of the blades. The aperture is the gap that the light comes through. It is the size of the aperture that determines how much light gets through the photographic lens unit to the image sensor.

The size of the aperture does not only control the amount of light through to the sensor. It also controls the ‘depth of field’ in the shot. The depth of field is the part of the picture which is in sharp focus.

The size of the aperture controls the amount of light that is allowed through the lens. As the aperture gets bigger the amount of light coming through the lens increases. However, a bigger aperture creates a shallower depth of field. Taking a photo at F4, a wide aperture, means you will be able to focus on an object like a face and have a high light input. But you may not be able to discern any detail behind the head. The depth of field has been made shallow by the wide aperture. You lose the focus in the back of the shot when the depth of field is shallow. You also lose some of the foreground ability to focus too.

If you set the aperture to f11, a narrow aperture, you will get sharpness right through the shot. The depth of field is deeper. A narrow aperture extends the depth of field. Of course the narrow aperture also reduces the light coming through to the digital image sensor.

If you set the aperture to, say, f3.5, a wide aperture, the shallow depth of field becomes apparent. The zone of sharpness will be well defined. Out of the sharp zone you can see highly frosted out-of-focus objects. The out-of-focus area is called bokeh. Shooting with a shallow depth of field creates bokeh in the background. The effect can be very pleasing. The aesthetics of bokeh is a lifetime of experiences for a photographer – it is an important aspect of many facets of photography.

To sum up…

Aperture sets the amount of light allowed to pass through the lens. It is one of the main controls used to create an exposure. When the aperture is wide open the depth of field is very shallow. When the aperture is narrow the depth field gives sharpness through the image.

Are you getting enough? Personal Projects

This year candles are the theme of my personal project

This year candles are the theme of my personal project

No one seems to have enough time to do all they want these days. Life is certainly busy! Often this means the things we are passionate about get left out of our lives. As photographers we forget to take photos until the ‘right time’ – which never seems to come. I find it helps to have a personal project to keep my mind focused on the year ahead and to ensure I put time into my own personal photography.

Here are a few reasons to start a personal project…

  • It gives you a reason to take photographs
  • Your project acts to help you focus on a subject
  • When you are not inspired you can just play with project ideas
  • It helps keep you motivated
  • You build up a library of images on one subject
  • You get to know the techniques of that subject really well
  • Your creativity is given the chance to explore something in depth
  • When the project is done you could run an exhibition for family or friends
  • You can be inspired by trying out the project theme in new places
  • It gives you a reason to look at other peoples work on the subject
  • Find out how great photographers have photographed your subject

There are many more reasons to do a project, these are just some of the ones that have motivated me in the past. If you take a few minutes and write out a few ideas why you want to do a project it will help you commit to the subject.

Your project is your own, and only you can determine what direction it takes you. So it helps to plan it out a bit. Maybe set yourself some goals. Here are a few examples…

  • I will finish my project when I have 100 quality images of my subject
  • A quality image is one that I am proud to show family and friends
  • I aim to improve my use of Depth of Field and bokeh on this project
  • I will aim to take at least 50 photographs of my subject per week

Of course you don’t need to follow my examples. You might think 100 exhibition quality images is too much for the time you have. Great, set the project up to suit you. You may not want to improve your use of bokeh (that lovely blur of bright objects in an out-of-focus background). Why not concentrate on another technique, say, greater use of deep shadows as a compositional feature. Anything, especially things you want to improve.

A personal project is a great way to help integrate your photography into your life. If you choose a subject that can be found in everyday life then you can do some shots in your lunch break or whilst commuting. In short it gives you a reason to keep taking photographs. That’s a good thing right? More of what you like and enjoy will help reduce stress and increase the fun in your life.

Having an exhibition or promising a presentation for someone is a good way to tie up the end of your project. It gives you something to aim for. However, it can be fun to just produce a web gallery, or publish a sequence of the shots on YouTube. You never know it might go viral!

In the first part of this year I am going to make ‘Candles’ a personal project. You can start a personal project any time and for any duration. So get going on it as soon as you can!

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’.

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