Hasselblad CF DIGITAL CAMERA BACK RANGE User Manual page 168

Sliders
Click and drag the sliders to set the highlight and shadow points and to
set the minimum- and maximum output values. The min. and max. output
values reflect the settings on the Dot tab of the Setup window.
See "Dot Tab" on page 40 for details about these settings.
NOTE! You can also use the arrow keys on the keyboard to move a slider
once it has been selected. Hold down the ctrl key to move in larger
increments. Use ctrl-tab to step between sliders.
Histogram Cut-off View
If you hold down option key while dragging the shadow or highlight
slider in the RGB histogram you will get an illustration of the areas in the
image that are cut off by the current slider setting.
Buttons
Software Reference - FlexColor 4.0 for Camera Backs
Show Output Histogram Button: Click this button (enabled
when grey) to display the histogram as it appears after the
highlight and shadow values are applied. Disable it to work
while viewing the histogram of the image before these
settings are applied.
Auto Button: Click on this button to have FlexColor assign
highlight and shadow values based on the histogram of your
image. If the current setup is configured to remove color
cast, the image will also be automatically neutralized.
Reload/Active Buttons: See description on page 85.
The Histogram Window
The Histogram Display
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