was gonna buy a used d3100 with a 18-105 kit for 140€, but I saw an oily looking smudge on the mirror.
The viewfinder seems clean only thing is I didn't see those indicator leds on the bottom but that's maybe because i shot in auto and they don't light up?
Photos look pretty normal, but i will take some underexposed and overexposed shots to see if there's dust or dead pixels
whaddya think?