Hasselblad CF DIGITAL CAMERA BACK RANGE, User Manual

Page: 112 / 223

Auto Tab
The
Auto
tab sheet has percentage settings for both
Shadow
and
Highlight
. When you use the
Auto
button, the
FlexColor
application
computes what it thinks the highlight and/or shadow values should be
based on the histogram of your image. It then modifies the values by the
percentages that you set here to find the final setting. The percentage is
applied to the difference between the highlight and shadow settings.
For example, if the
Auto
% for
Highlight
is set to 2 and you use the auto
function on an image in which the highlight might normally be 200, then
FlexColor
will assign a highlight value of 196 (provided the shadow value
was zero). If you find that you frequently need to adjust the highlight or
shadow values to be tighter than the auto function normally chooses, then
use a positive setting here. Positive settings will result in a relative
increase in the contrast.
You are able to set negative values for the
Auto
% settings. This will make
the automatic controls use less extreme settings for highlight and shadow
than normal. For example, if the
Auto
% for
Highlight
were set to -2, and
you use the auto function on an image in which the highlight might
normally be 200, then
FlexColor
will assign a highlight value of 204
(provided the shadow value were zero). This setting will enable you to
preserve more details at the extremes of the tonal range than you
otherwise would if the highlight point were set lower.
For more information about working with highlight and shadow points,
see "The Histogram Window" on page 93.
Software Reference - FlexColor 4.0 for Camera Backs
The Setup Window
39
Auto Tab