I just picked up a new Mamiya macro bellows and several m42 lenses. Here are a couple of test shots, that I took just messing around with crap laying around my living room. One thing is for sure; I need to clean my sensor! This is a tiny number stamped into the top of a soda can. The number is right under the hole in the tab, and each digit is about 1mm wide. Taken with the bellows and a 50mm lens. This was taken with the bellows and a 135mm lens.