Mamiya DM System, User Manual

Page: 162 / 202

Chapter 1 - Basic info
154
Chapter 11 - Using the software
optimizinG exposure
Contrast
Moving the slider to the right increases contrast throughout the image. Moving to the left
decreases.
Brightness
Provides a tool to primarily brighten the mid-tones of the image; this tool has the effect of
increasing mid-tone contrast. By contrast the gamma or centre slider of the levels tool works on
the mid-tones, but has the effect of lightening shadow areas and reducing contrast.
Saturation
Increases or decreases saturation of the image. When saturation is decreased the image is black
and white. Then the histogram changes from RGB to monochrome though the image is still in a
RGB color space chosen as out output color space. The saturation slider is not “just” saturation,
but intelligent saturation. The negative values represent regular saturation settings, the positive
values are comparable to what 3rd party software would call “vibrance” – Vibrance is more gentle
to the skintones, and will be able to enhance for instance blue sky without oversaturating the rest
of the image.