Quote:
Originally Posted by alpal
No -
you work on a copy (just above the original like Louie does)
If you have the inverted layer mask showing the doughnuts on the right hand side -
if you adjust the curves by selecting that copy layer you will be able to lighten the darker areas only
which will be exactly where the dust doughnuts are.
cheers
Allan
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Louie has definitely done us a great service there.
Also its how you apply these basics that makes a difference. This is a clever application. One for the astro toolbox for sure. Its fast, easy and very effective where other approaches are tedious, hit and miss or alter the image too much.
Greg.