What is contrasted?

Answer 1

Contrast is the light thing that you need for your picture

Contrast is created by the difference in luminance, the amount of reflected light, reflected from two adjacent surfaces.

There is also the Weber definition of contrast: Contrast =Lmax - Lmin

Lmax

Lmax = Luminance on the lighter surface

Lmin = Luminance on the darker surface

When the darker surface is black and reflects no light, the ratio is 1. Contrast is usually expressed as percent; the ratio is multiplied by 100. The maximum contrast is thus 100% contrast. The symbols of the visual acuity charts are close to the maximum contrast. If the lowest contrast perceived is 5%, contrast sensitivity is 100/5=20. If the lowest contrast perceived by a person is 0.6%, contrast sensitivity is 100/0.6=170.

Weber Contrast; C= (Lmax-Lmin)/Lmin.

Answer 2

here is a defination of the word

contrastive

1. tending to contrast; contrasting. contrastive colors.

2. studying or exhibiting the congruence and differences between two languages or dialects without reference to their origins: contrastive linguistics.