Digital Cinematography, 2nd Edition

442 Chapter 10

Sometimes the goal posts alone don’t pro-

vide enough information about how an image is

clipped. RED cameras also indicate which color

channels have become clipped (to the right of

the histogram). These indicators appear as a red,

green, and blue dot for each color channel – and

are therefore often referred to as the “trafc lights.”

When a colored light is illuminated, that color

channel contains overexposed areas. If the lights

are not lit, there is no clipping in that channel.

When about 2% of the image pixels for a par-

ticular color channel have become clipped, the

corresponding ...