u/maraudersmumblings

Hey friends! Hoping someone might know the size screw I need to replace here? Bonus points if you know where I can snag one. I believe this is a 3.5 MX extra extra bonus points if you correct me lol

Looking at a few lenses for my Mamiya TLR- why are some labeled in centimeters vs millimeters? I can’t find a ton looking for the centimeter ones online?

So currently in the process of building my room and have run into a head scratcher. This is in the basement so the floor beams are directly overhead and I’m trying to figure out how to best enclose them to keep dust out. Because the ceiling is low I’m trying not to lose any additional space so trying to figure out what the heck to put up there? Currently trying a hardboard like material but worried it might end up being too reflective