I selected “Multiple Exposure” in both my Z 7 and D850, and 2 exposures for each of the Overlay Modes - “Add, Average, Lighten and Darken”. My impression of the instructions was that I could see the actual overlay effects in the Z 7 viewfinder. Not so.
I could see the two superimposed images alright, but the actual combined image was much different. It seemed that the filter effects are applied to the multiple images AFTER the last shot has been taken, or am I doing something wrong? Would appreciate some advice. Thanks.