Vector images are good if you want clear definition regardless of the change in size of drawings. Images created in Adobe Photoshop are bitmap images. Each pixel in a bitmap images has a specific location assigned to it, and the data describes whether it is black, white or a lovel of color. The amount of color information in a bitmap determines its size. Bitmap images are edited by manipulating groups of pixels.
Bitmap images are resolution-dependent.
Therefor they may appear jagged and lose detail if they are created at a lower resolution and then enlarged or printed at a higher resolution. TIFF Tiff is a bitmap file that is supported by most paint, image-editing and page layout applications. EPS is used to transfer Postscript language work between applications. EPS files can contain both vector and bitmap graphics. This file format enables you to place work created by one application in the pages of a document created by another.