Pixels and resolution are the heart and soul of working with digital photographs, art, and scanned images. It’s somewhat similar to buying bed linens. At higher thread counts the sheets feel good; at lower counts they feel rough. With the proper resolution, images look good; with the wrong resolution, images look blurry or jagged.
There are two ways to determine the correct resolution. One is to memorize a set of numbers and rules and follow them by rote. That’s okay until a project comes up that has slightly different requirements—then you’re lost.
The other way is to understand why the numbers and rules were set. Then if a project comes up that’s different, you’ll know what to do.
This chapter covers the ...