7. The Menus / 7.7 The Filter Menu
7.7.32 Digital Camera/White Point
White Point allows to correct the white point of an image. This way the
brightness and colors are corrected, too.
There are two different modes:
- Setup White Point
- In this case the color field defines the white point which can be read
from the image by using the mouse, too. If there is no white in an image,
Limit can be used to set the relative brightness of white to the given
color.
- Automatic checks the image and calculates a white point and a limit
from its content. Please note, that the automatic mode may calculate a
wrong result on images with an extreme content, i.e. one color is
absolutely dominating.
- Setup Gray Point
- If an image doesn‘t contain white, a gray point can be set, too. The white
point will be extrapolated based on this gray point. Fix White Point
keeps the white and black in an image unchanged. In between the colors
are modified accordingly to the gray point.
Gamma changes the brightness of the image.