Lens Calibration Guide
12
Brightness compensation
Using Lens Falloff correction tends to create images that seem brighter.
You can adjust brightness or the develop curve to compensate for this or shoot
the images at a lower exposure level.
Creating the calibration shot in low light
In some conditions, you may not be able to create an optimally exposed
calibration file as described above because the required exposure time is greater
than the maximum. This could happen when you are shooting using indoor
lighting, under a low sun, and so on.
In these casestake the calibration shot at the maximum permitted exposure, even
if it will be underexposed.
Note: It is important that the illumination of the calibration shot be as close as
possible in color temperature to that of the scene. Therefore don’t use additional
lighting when taking the calibration shot.
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