While some folks may find the Grab application handy, I prefer to use keyboard shortcuts to take pictures of the screen in Mac OS X. There are a few ways to snapshot your desktop…
|1) To take picture of the entire screen||2) To take picture of a specific window/object|
|3) To take picture of a selected area
Screenshots are saved to the Desktop as PNG file (OS 10.4 and later) or a PDF file (OS 10.3 and prior). To copy the screenshot to the clipboard instead of creating a file on your desktop, hold the Control key in combination with the above keystrokes.