Stacking is indeed not the correct operation for what you need, working with layers would be better. Stacking expects all images to have similar histograms.
Duplicating images is not needed, just weighting differently based on ISO value.
Stacking is indeed not the correct operation for what you need, working with layers would be better. Stacking expects all images to have similar histograms.
Duplicating images is not needed, just weighting differently based on ISO value.