Hi Brendan,
no I havenīt heard of these tutorials so far. I am reading another book: Photoshop Astronomy by R. Scott Ireland. but I have to admit that I only read it when I have new data to process and basically look for certain sections instead of studying the book to understand what it is all about.
My problem is that after 4 or 5 curves clipping occurs on both ends or the histogram fragments at some point.
I will have a look at Kenīs tutorials, thanks for the tip.
Cheers
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