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+1EV as a 'Next Step' |
+1EV as a 'Next Step'
Points at (58,113) (110,167) and (171,219)
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Plus One EV: The 'problem' is that within Capture NX, the only way
to (currently) adjust EV is under 'Develop', which applies to an entire
photo, and by only -2EV to +2EV. But what is you want +3EV. Or what if
you want to apply +1EV to just a portion of your photo? And because Nikon
uses a custom tone curve, that greatly complicates creating an accurate
"+1EV" Adjustment (without access to Nikon internal information).
However, by carefully observing the behavior of EV compensation on an
actual photograph, the underlying changes can be deduced, and an
approximate +1EV 'Levels & Curves' adjustment made.
The 'Levels & Curves' that you see to the right is a very close
approximation of '+1EV' as a next step -- and while it is not perfect,
for most situations, it works incredibly well.
Validating the curve: Here is an example photo that
was underexposed due to a backlight situation:
Underexposed photo
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and here is a comparison of a true +2EV Exposure Compensation (left photo)
under 'Develop' as compared to two back-to-back +1EV 'Levels & Curves'
(right photo) described above:
+2EV Exposure Compensation
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Two +1EV Levels & Curves
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Hopefully Nikon will realize the benefits of adding 'EV compensation'
as a next step, and add a 'true' EV adjustment into a future
Capture NX version.
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