All 5 Uses

contrast
in
The Girl with the Dragon Tattoo
(Edited)

High banks of snow presented a picturesque contrast to Stockholm.
Chpt 1.4

contrast = difference
I was childless—in striking contrast to my brothers and other family members, who seemed obsessed with the need to propagate the house of Vanger.
Chpt 1.4 *
Mikael cropped the image to include the window alone, and then he experimented with adjusting the contrast and increasing the sharpness until he achieved what he thought was the best quality he could get.
Chpt 3.16

contrast = difference between tones of an image
Blomkvist edited a series of pictures in which he cropped the top half of Harriet and processed them to achieve the best contrast.
Chpt 3.16 *
He cropped out the sticker and adjusted the contrast and sharpness.
Chpt 3.16

Definitions:

(1) (contrast as in: contrast their writing styles)
point to differences between; or compare to show differences
(2) (contrast as in: there is a contrast)
a difference -- especially a notable difference; or the side-x-side arrangement of things that draws attention to an unmissable difference
(3) (contrast as in: sharpen the picture contrast)
the difference between tones of an image -- as in a photo or video -- such as the quality of brightness or the intensity of shades or colors
(4) (meaning too rare to warrant focus)