The Adobe Photoshop Layers Book: Harnessing Photoshop's Most Powerful Tool, covers Photoshop CS3

INTRODUCTION

Sometime in early 1993, I was working for a how-to photography book publisher as an editor/designer. We had Photoshop 2.5 and I used it to make adjustments to scan the images and illustrations to make them ready for print. Photoshop was fairly new at the time; it didn’t yet have all of the features that would, not much later, make it the industry standard in image editing.

One particular project I remember working on was scanning topographic maps for a book on various New York waterfalls. The book had been self-published by an author who added the maps to the book to give the reader an idea of the landscape around each of the falls. We were planning on redoing it and bringing it to a larger audience.

For the original book, the author ...