Mac operating system always has easy options to capture a screen shot .To take screenshot you can capture full scene, window or a portion of the screen. Here is the three simplest methods with the help of few keywords that you can use for taking screenshot.
How to take whole screen screenshot :-
1.To capture entire screenshot on mac computer, you have to press and hold command, shift and 3 keys altogether and your screenshot will automatically saved as a PNG file on the desktop.
2. How to take a portion of the screen:- Press and hold Shift, Command, and 4 keys altogether. Drag the select the area of the screen to capture. If you want to cancel taking the screenshot, press the Esc (Escape) key. Your screenshot will be ready and saved as a PNG file.
3. How to capture a window or menu:- Open the window that you want to capture.To take screenshot Press and hold Shift, Command, 4, and Space bar keys altogether. If you want to cancel taking the screenshot, press the Esc (Escape) key. By default, screenshots will be saved to your desktop as a PNG file.