What is it, what are it’s properties and what can it do?

*Photoshop produces Rasterized or Bitmap imagery.

*Photoshop is a graphics editing program developed and published by Adobe Systems.

*A bitmap (or raster) image is one of the two major graphic types (the other being vector). Bitmap-based images are comprised of pixels in a grid.

*Each pixel or "bit" in the image contains information about the color to be displayed.

*Bitmap images have a fixed resolution and cannot be resized without losing image quality. Common bitmap-based formats are JPEG, GIF, TIFF, PNG, PICT, and BMP.

*Photoshop is raster based (images made of thousands of little dots, or pixels) while Illustrator is vector.

Open up Photoshop familiarize yourself with the program interface

GO TO:

http://helpx.adobe.com/photoshop/using/tools.html