Canon EOS Rebel T4i 18-135mm IS STM Lens Kit Instruction Manual page 131

Parameter Settings and Effects
Sharpness
Adjusts the sharpness of the image.
To make it less sharp, set it toward the E end. The closer it is to E,
the softer the image will look.
To make it sharper, set it toward the F end. The closer it is to F, the
sharper the image will look.
Contrast
Adjusts the image contrast and the vividness of colors.
To decrease the contrast, set it toward the minus end. The closer it is
to G, the more muted the image will look.
To increase the contrast, set it toward the plus end. The closer it is to
H, the crisper the image will look.
Saturation
The image's color saturation can be adjusted.
To decrease the color saturation, set it toward the minus end. The
closer it is to G, the more diluted the colors will look.
To increase the color saturation, set it toward the plus end. The
closer it is to H, the bolder the colors will look.
Color tone
The skin tones can be adjusted.
To make the skin tone redder, set it toward the minus end. The
closer it is to G, the redder the skin tone will look.
To make the skin tone less red, set it toward the plus end. The closer
it is to H, the more yellow the skin tone will look.
A Customizing Image CharacteristicsN
131