ABSTRACT
This chapter explains how to work with photos that have never been near Camera Raw, such as images that have originated as TIFFs or JPEGs. It outlines a few of the fundamental principles of pixel image editing such as bit depth and the relationship between image resolution and image size. The chapter looks at the main image editing adjustments and how they can be used to fine-tune the tones and colors in a photograph. The image size dimensions and resolution can be altered using the Image Size dialog. The user interface is straight forward and makes it easy to understand what people are doing when people modify the Width, Height, and Resolution settings. Photoshop reads the values of neighboring pixels vertically, horizontally, and diagonally, to calculate a weighted approximation of each new pixel value. Photoshop intelligently guesses new pixel values, by referencing the surrounding pixels.
