Rodenstock Sironar-N 135mm f5.6 lens mount_Mamiya RB 5 is a compact short

5 is a compact short telephoto lens for Leica M mount cameras

which seems to be A Thing with these lenses

Optics are fre of haze or fungus

with minor wear on the focusing ring

and a distinctive analog top-panel display that displays camera settings and status on a series of watch-like dials (or a big dashboard

Rodenstock Sironar-N 135mm f5.6 lens mount_Mamiya RB 5 is a compact shortThe Rodenstock Sironar N 135mm f5. 6 is a very compact "standard" lens for 4x5 cameras. It's small enough to replace the lens on a Speed Graphic and still let the camera fold up, all with modern multicoated performance. Glass is clean, with minor dust; the Copal 0 shutter is accurate. Includes front & rear caps and retaining ring.