Quote:
Originally Posted by gregbradley
Rick, Marc pointed out to me that the histogram in PS is often cached. If you look at the histogram it has a little number up top right. That shows you how far back it is showing. You can update it to show the current image and when you do that it invariably shows the black point moved up. Click the little warning triangle for the refreshed histogram.
So the image could still be black clipped and not show it in the histogram.
Greg.
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Thanks, Greg. That's definitely something to keep in mind. I was using the histogram process in PixInsight but only on the FITS image. It's quite possible the low end got truncated during the final conversion to JPG, so I will check that with PS.
Cheers,
Rick.