FastRawViewer Software 2.0 (Download) User Manual
Page 112
FastRawViewer
– user manual
Page 112 of 175
Copyright © 2014-2016, LibRaw LLC,
Exposure correction on file open:
o
No correction – no additional exposure correction (apart from the Adobe-style one, if
it is ON) is applied when a file is opened, unless the correction is found in the
accompanying XMP sidecar file.
o
Autoexposure – automatic exposure correction is applied, according to the settings
listed below.
o
Keep from prev. file – the new file will be opened with the same exposure correction
that was set for the previous file (it does not matter here how that exposure correction
was set, manually or automatically).
Auto Exposure – controls the automatic exposure correction (the one that is applied when
‘automatic correction’ action is performed).
o
Fixed Exposure Shift – the exposure is shifted by the fixed value.
o
ETTR-style autoexposure (shift histogram to the right) – positive exposure correction
that forces the saturation of the given percentage of pixels (those saturated pixels are
having value of 255 on the 8-bit scale); the percentage is controlled through Saturate
up to %NN of pixels setting.
The amount of the positive exposure correction shift is limited by the ‘Limit to’ setting:
Unlimited – no limit
Hard limit – the limit is set to the given amount.
Virtual ISO – limits the automatic exposure correction, taking into account the
ISO setting in the camera. For example, if the current shot is taken at ISO 400
setting in the camera, while auto limit is set to ISO 6400 (the default value), the
positive exposure correction is limited to (6400/400 =) 16 times, or, in
photographic units, to 4EV.
Manual exposure step size – sets the step of manual exposure adjustment change.
Exposure adjustments affect OverExposure display – when turning on this setting the change
in exposure adjustment (both automatic and manual) will affect the display of overexposed
areas.
Under/Overexposure layer opacity – controls the perceived contrast of the highlighting for
over- and underexposed areas.
Underexposure detection limit NN EV below sensor saturation – sets the “usable dynamic
range” of the camera. Everything below this limit will be displayed as underexposed.