Image+Formats

=Image File Formats=

There are two main categories for graphics--bitmap and vector. Both of these file types will work well in Photoshop CS2. A Photoshop file can contain both types of data. But, there are some differences between the two.

[|Bitmap vs. Vector Based Graphics]--Adobe website

JPEG (photographs), JPG (photographs), TIFF (scanned images), RAW (digital negative), PNG (web graphics), GIF (animated graphics), BMP (Windows)
 * Bitmap Images**
 * Called Raster images--made up of a grid of dots known as pixels.
 * Pixels are editied rather than objects or shapes.
 * These are the most common electronic medium for photographs, paintings.
 * They lose detail when scaled; they are resolution-dependent.
 * Images contain a fixed number of pixels.
 * Each pixel is assigned a location and color value.

PDF (Adobe), SWF (Flash), CDR (CorelDRAW), EPS (Illustrator), DXF (AudoCAD), SVG (Two-Dimensional), WMF (Windows Metafile)
 * Vector Images**
 * These are made up of mathematically defined lines and curves called vectors.
 * Can be moved, resized, or changed without losing the quality of the graphic.
 * Can be scaled to any size and printed at any resolution without losing detail; they are resolution-independent.
 * Best choice for bold graphics such as logos.

[|Comparison of graphics file formats]