This is half-frame Zenit SLR used for medical purposes.

(1st Photo from Collection of Viktor Suglob, the rest www.fedka.com)

The 1st photo shows the MT-1 with the endoscope adapter fitted. Photo 5 shows the MT-11 endoscope fitted to the camera. The fibre optic cable below the camera is used to connect the light-source which illuminates the subject matter. The control in photo 6 is used to steer and position the endoscope.

David Tomlinson