01-21-2017, 01:14 AM
(01-20-2017, 11:47 PM)Ofnuts Wrote: The Levels tool (and therefore the histogram) is restricted to the selection, and is "alpha-weigthed" (ie, pixels contribute proportionally to their opacity). I get this kind of empty display if the selection includes only transparent pixels... The Histogram display works the same way, so do you have visible histogram in it?
Thanks Ofnuts, I thought I was selecting the image before I selected levels. Let me play with it a little to better understand what is happening. That would certainly explain why changes made in the dialogue were not changing the image.
TC