The Photo Adjustment Menu allows you to tweak the brightness, sharpness, contrast, and saturation of your image in real time. To bring up the Photo Adjustment Menu, swipe right from the left side of the screen or tap the paralleled vertical lines on the viewfinder interface (get to "Photo Adjustment Menu" quickly).
Adjust the Saturation, Contrast, Brightness, and Sharpness of your photo by sliding the adjustment controls up and down. Tap the reset button to revert back to the default settings.
Swipe left or tap the paralleled vertical lines (go back to the viewfinder quickly) to exit the Photo Adjustment Menu.
The Photo Adjustment Menu in iPad version allows you to tweak the saturation, contrast, brightness, and hue of your image in real time.