Page 15 - CC2017_WD_Look_Inside

Stage 1 Setting Up the Workspace

There are two primary types of artwork: vector graphics and raster images.
• Vector graphics are composed of mathematical descriptions of a series of lines
and geometric shapes. These files are commonly created in illustration Note:
(“drawing”) applications like Adobe Illustrator. Vector graphics are resolution
independent; they can be freely scaled and are automatically output at the Why is this information
resolution of the output device. important? The ad you’re
building in this project
• Raster images are made up of a grid of individual pixels (rasters or bits) in will be placed in print
rows and columns (called a bitmap). Raster files are resolution dependent magazines, so you have
— their resolution is determined when you scan, photograph, or create the to build the new file with
file. (Line art, sometimes categorized as a third type of image, is actually a the appropriate settings
type of raster image that includes only black and white pixels.) for commercial printing.

Photoshop is what some people call a “paint” program — it is primarily When the composition is
used to create and manipulate pixel-based or raster images. Raster-image quality finished, you will convert
depends directly on the resolution; when you create files in Photoshop, you need to it to a resolution and
understand the resolution requirements from the very beginning of the process. file format that is more
Pixels per inch (ppi) is the number of pixels in one horizontal or vertical inch appropriate for digital
of a digital raster file. As a general rule, commercial print jobs require 240–300 pixels media display.
per inch at the final output size to achieve good image quality in the printed piece.
Some digital media such as desktop Web
browsers typically require much lower
resolution, commonly 72 ppi, although
monitors and mobile devices with HD
display capabilities support higher-
resolution images.
It is important to realize that you
cannot significantly increase image
resolution once a raster image has been
created or captured. When you create files
that will be used for both print and digital
media — as in the case of this project — The same raster image is reproduced here at 300 ppi (left) and 72 ppi (right).
you should start with the higher resolution Notice the obvious degradation in quality when the resolution is set to 72 ppi.
and then reduce the resolution after the
composition is complete.

CreAte the neW file

When you create a file in Photoshop, you can define a number of important
parameters in the New Document dialog box. In this exercise you will define the
size, resolution, and color mode of the file that will serve as the background for the
composition you create throughout this project.
1. Download Liberty_Web17_RF.zip from the Student Files Web page.

2. Expand the ZIP archive in your WIP folder (Macintosh) or copy the archive
contents into your WIP folder (Windows).
This results in a folder named Liberty, which contains all the files you need to
complete this project. You should also use this folder to save all files that you create in
this project. (If necessary, refer to Page 1 of the Photoshop Interface chapter for specific
instructions on expanding or accessing the required resource files.)

Project 1: Composite Movie Ad 25