Asahi Bellows Unit S large format or pair it with the

or pair it with the EF Extender 1

Optics are excellent

before the 35-70

while retaining their standard 52mm filter thread

with all rubber caps

Asahi Bellows Unit S large format or pair it with theThe Asahi Bellows Unit S is a tiny, foldable bellows for M42 thread mount cameras and lenses. Provides more than 2x magnification with 55mm or 58mm lenses, according to the on rail scales; should do similar work with other lenses of similar focal length. Smooth geared adjustment, good locks. There is a tripod socket at the camera end, but it's pretty minimalist, so you may want to stick with smaller lenses. But, again, this thing is tiny when it's