• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL

Part: III Editing Images > Controlling Sharpness and Clarity

Chapter 19. Controlling Sharpness and Clarity


148 About Sharpness

149 Sharpen an Image

150 Blur an Image to Remove Noise

151 Blur a Background to Create Depth of Field

152 Create a Spin Effect

153 Soften Selected Details

154 Add Motion to an Image

One very important element of every image is its sharpness. The fuzzier the edges of the subject in your image, the less appealing the image becomes. When referring to sharpness, many people have a tendency to characterize it as a quality of edges, like the sharpness of a blade. In practice, that's inaccurate. The subject of a photograph looks sharp when all of its surface reflects light the way your eyes expect it to. If you sharpen every element of a subject, it will appear two-dimensional, like a frame in a comic book. An image looks sharp when a fuzzy subject—such as a cat—appears fuzzy but not overcompensated. A round object such as the globe of a streetlamp or a marble in a child's hand looks sharp when its deep, translucent interior looks just as hazy as the real thing. Sharpness is not to be confused with accuracy. If every element of a scene looked sharp in a photograph—perfectly in focus, nothing slightly blurred—it wouldn't look real. The proper processing of a digital photograph requires you to be in control of sharpness, so you get to say what's crystal clear and what's background noise.



Not a subscriber?

Start A Free Trial

  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint