[Digikam-devel] [Bug 279255] white balance method "camera" does not use the camera's values

Alex Tutubalin lexa at lexa.ru
Sat Sep 22 13:37:15 BST 2012


https://bugs.kde.org/show_bug.cgi?id=279255

--- Comment #16 from Alex Tutubalin <lexa at lexa.ru> ---
>From Libraw docs:

float adjust_maximum_thr;

This parameters controls auto-adjusting of maximum value based on
channel_maximum[] data, calculated from real frame data. If calculated maximum
is greater than adjust_maximum_thr*maximum, than maximum is set to
calculated_maximum.

Default: 0.75. If you set this value above 0.99999, than default value will be
used. If you set this value below 0.00001, than no maximum adjustment will be
performed.

Adjusting maximum should not damage any picture (esp. if you use default value)
and is very useful for correcting channel overflow problems (magenta clouds on
landscape shots, green-blue highlights for indoor shots).

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