Test of AI based noise reduction apps for astro photography

diyphotography have a contribution of a longer test of noise reduction for different astrophotography photos.

Interesting long read.

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Quite an extensive comparison! It’s too bad that most tests like this, including this one, rely on application default settings which can easily be over-aggressive rather than not-enough. But this does show that there are no perfect solutions: results can vary with the job. While I do almost no astrophotography, my own experience with DeepPRIME/XD (with default settings) on non-starry skies is the same as this tester reported: I have to watch out for mosaic patterns and false textures. So I tend to keep DeepPRIME and DeepPRIME XD set in the range of 15-30, not 40. Usually, 15 is fine, but sometimes more is needed to get good gradients with preservation of color and subtle grain.