A Short Course Book
Using Your Digital Camera
A Guide To Great Photographs

Chapter 2. Controlling Sharpness

One of the first things you notice about a photograph is whether or not it is sharp. Extremely sharp photographs reveal a richness of detail, even more than you would normally notice in the original scene. If the entire image isn't sharp, your eye is immediately drawn to the part that is. If your photos aren't as sharp as you want them to be, you can analyze them to see what went wrong.

  • Focus. If none of your image is sharp, or if your main subject is not sharp but other parts of the photograph are, your camera was improperly focused.
  • Depth of Field. If your central subject is sharp but the background or foreground is less so, you didn't have enough depth of field.
  • Camera Movement. If the image is blurred all over, with no part sharp, the camera moved during the exposure. Some points appear as lines, and edges are blurred.
  • Subject Movement. When some of the picture is sharp but a moving subject appears blurred, your shutter speed was too slow.
In this chapter you'll see how to ensure your photos are sharp when you want them to be and how to use blur creatively.

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