Schneider Apo-Macro-Digitar 5.6/80 mm in Aperture Mount NK-0
Image circle 80mm at f/11 (at 1:1 ratio)
When used in combination with a DSLR the following perspective comparison applies:
= 80mm on SLR full frame
= 110mm on 48x36 digital back CCD
= 128mm on 4,5x6cm film size
= 240mm on 4x5" film size