Nikon 105mm f4 Nikkor-P (for bellows)  type_Developing Tanks Pentax-110 24mm f2

Pentax-110 24mm f2

but it beats carrying around a bunch of external viewfinders

but way less plentiful than the M version

A versatile

It's machined from solid aluminum

Nikon 105mm f4 Nikkor-P (for bellows) &nbsptype_Developing Tanks Pentax-110 24mm f2Nikon 105mm f4 Nikkor P lens for bellows use. No internal haze, no fungus, good diaphragm, a few internal coating lines visible under very bright light which do not affect image quality. These are likely from original assembly, and while theyre worth noting, they wont wreck your image. Please note that this lens is intended for use on bellows which are not included and does not have a focusing mechanism of its own.