Gamma

To make Gamma correction,  click Correction | Gamma or select Gamma folder.

Select the value of gamma  effect by scrolling the Value scroll bar.                

 

Tip

In Gamma correction you can make gradual adjustments

to the brightness or contrast  of an image.    Adjusting the gamma

lets you change the brightness values of the middle

range of gray tones without dramatically altering the shadows

and highlights.