Quote:
Originally Posted by Atmos
Thanks Rick. What does the $T refer to in that expression?
I was just thinking of doing something as simple as adding a bright star mask to a range mask, would that increase the masking of the brighter stars or not make a whole lot of difference?
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$T means the target image, Colin. Using $T means you don't have to edit the expression every time you apply it to a different image.
You could combine a range mask for the low signal areas with a bright star mask but I'd suggest you do it with the max() function rather than addition.
The reason I prefer a clipped luminance mask to a range mask for this purpose is that it varies the strength of the HDRMT or LHE effect depending on brightness. With a range mask it's all or nothing.
Cheers,
Rick.