Hardware : Industar 50-2

the Industar 50-2- the russian pancake !
also name ИНДУСТАР 50-2
Manufacturer : KMZ
focal min : 50mm
Aperture max : 3.5
Aperture min : 16
serial number : 7302003 , so made in 1973...
not multicoated..

mount on my D40 with an M42 adaptater

another view of my industar

the industar is realy simple, it's derived from the famous Carl Zeizz "Tessar". The formula is the same: 4 lens elements in three groups.

mount on leica M6

mount on Zorki-4