6. Pixel Basics

image

In This Chapter

Changing resolution and dimensions 97

Changing the canvas size 102

Cropping images 103

Flipping and rotating images 107

Straightening images 108

Before applying adjustment or image-editing commands, you need to make sure your document is the proper size and orientation and is cropped to your liking. In this chapter, you’ll learn how to change the resolution and dimensions of an image; change its canvas size; and crop, flip, rotate, and straighten it.

Changing resolution and dimensions

In this section, you’ll encounter three terms:

• The number of pixels a file contains is its pixel count

Get Photoshop CS4 for Windows and Macintosh: Visual QuickStart Guide now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial