Tiancao
Newbie
For those who want to tint the viewfinder, this may be of interest: There is a space between the black metal frame (after removing the silver cover) and the viewfinder window that can hold a piece of gel filter. I probed it with paper first, and ended up with a size of about 2 cm x 1.5 cm. The space is bigger but the filter may bend if being too big. The drawback is that the filter may get slightly scratched during entry, so be gentle. My 2 cents. 😀