Photoshop CS6: Visual QuickStart Guide

7. Pixel Basics

In This Chapter

Changing the document resolution and/or dimensions

Changing the canvas size

Cropping an image

Cropping multiple images

Straightening a crooked image

Flipping or rotating an image

Pixels

Pixels, short for “picture elements,” are the building blocks that make up a digital image — the tiny individual dots that a digital camera uses to capture a scene or that a computer uses to display images onscreen. When working in Photoshop and for Web output, you’ll need to be aware of the pixel dimensions, or pixel count, of an image. For print output, you’ll need to be aware of its resolution.

Before applying adjustment or ...