Updated:
03/06/01

Intro to Digital Photography Course

Week 1 - Page 3


Notes: (This page takes 20 sec to load at 28.8 baud.) Warning!! Be prepared to wait! None of these photos were further compressed, so as to eliminate compression as a cause of distortion. Brad posed the question whether there was any difference in clarity between an original clear photo and the "sharpened" version. I have used the sharpen feature of PSP on occasion, for blurry or fuzzy shots that I still want to use. Depending upon how fuzzy the photo will depend upon whether or not the sharpening actually improves the shot. In the first example, I cropped an 800 x 600 section of my original photo. This photo did not really need sharpening. But I applied it anyway to see if the definition was improved at all. I didn't see any significant improvement, but maybe my eyes need to be re checked. In the second example, I took the cropped photo and enlarged it to induce some loss of definition. Then I applied sharpening. In this case, I could see that sharpening did improve the photo.
1600 x 1200 This is the original "raw" photo, showing the area to be cropped.	800 x 600 I selected and cropped to 800 x 600, so that the closeup is seen with no reduction.
1600 x 600 Warning!! Be prepared to wait! Unsharpened photo is on the left, the sharpened photo on the right. I saw very little improvement in the sharpness.
800 x 600 I then enlarged the cropped photo and re-cropped it to induce some loss of definition.	800 x 600 Sharpening applied improved the photo definition a little bit.
1600 x 600 Warning!! Be prepared to wait! Unsharpened on the left vs. sharpened on the right.