I am really confused at this point, despite having Googled quite a lot. I use stacking for either focus stacking in macro (insects), or for astrophotography (improve exposure). The reason of the stacking is not necessarily related to the noise, but in both cases you might say that it's a matter of keeping details in the picture.
Anyway, the problem is that I cannot denoise the result. For my latest insect pictures, I stacked the pictures in photoshop by aligning and merging layers - this gives me a stacked picture in lightroom that cannot be denoised. Same thing if you exposure-stack starry sky pictures directly in lightroom - denoise AI will not be available.
1 - is there a way to actually denoise the stacked result picture at the end (like you would with a single photo) - manual luminance in Lightroom is not comparable to the "real" denoise function that becomes nonavailable
2 - would it be better to denoise all initial images BEFORE stacking them
3 - should I just use the denoise of photoshop right after I stacked the layers and then save the picture back to lightroom?
I used Helicon Focus in the past (the free version) but I remember the .dng file was the same - no denoise available in Lightroom after importing the stacked picture from Helicon. Anyway now I am trying stacking with Photoshop which is definitely enough for my skills and I cannot justify the money needed for Helicon since I don't do that many macros (this is now unrelated to the topic).
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