Sharpen the Image

Sharpen the Image What is this?

It makes the image look crisper and the edges in the image more distinct.

When do I do this? Whenever you want to emphasize texture or draw the viewers

focus. How do I use this?

Most image sharpening software tools work by applying something called an “unsharp mark”, which despite its name, actually sharpen an image.

Illustrate in GIMP http://youtu.be/JQUDCX8N_rg

What do all of the options do? You can sharpen the whole image or certain sections of the image.

When do you sharpen an image?