Stacking photos for noise reduction
I´m just trying it out for the first time. I used the Nikon D2Hs with a 50 mm 1.4 Ai lens and a monopod. Six pictures used for each. It is rather time consuming to open six pictures and then copy the layers. But it´s kind of magic to see the noise go down a lot at the end. A run of Topaz Denoise and some basic adjustments and it´s finally done.