wbulte
Active Member
Hasselblad used to make a special camera system that allowed to record images for scientific purposes.
This system used a heavily modified 500ELM body and two special lenses:
A 100 mm Planar lens and a 60 mm Biogon lens.
Both lenses show extreme low distortion.
The camera does not have an auxilary shutter nor does it have a mirror.
Framing is done by a special finder.
The film backs are the only ones without a dark slide!
There is no room for a dark slide since the rear of the camera body holds a special plate with marks that are recorded on all frames.
Think of all the hairline crosses you see on the NASA pictures taken on the Moon with HB cameras. The etched hairlines are on the so called Reseau (glass) plate and allow accurate photogrammatic measurements to be made.
These MK (MessKamera) cameras & lenses are in the superior league in photographic accuracy, well beyond mere mortal stuff like SWC Biogons and the lot ;-)
Wilko