Asahi Takumar 135mm f2.5 darkroom Also has an internal 49mm

Also has an internal 49mm thread for rear-mounting filters

and we've already established that it's not a fish

with a diffuser panel to even out the light

Leitz 13009 UVa filter for Series VII drop-in mounts

and the crossbar accommodates backdrops up to 9 feet wide

Asahi Takumar 135mm f2.5 darkroom Also has an internal 49mmThis Asahi Takumar is actually a K mount lens, not a screw mount, so Spotmatic users will want to avoid this one. But if you've got a K mount camera, this is a nice short telephoto lens in pretty nice shape, but for a small ding in the filter ring. Focusing is good, with very light hesitation. Clean glass, good function.