"Surprise MT-1"
The camera "Surprise MT-1" is intended for special medical filming through endoscopic devices. Used without lenses and with lenses.
It was created on the basis of the ZENIT-19, and presented on sale as an ordinary half-format camera called ZENIT-MT1 Surprise.
Frame format: 18x24 mm
Objectives: Industar-50MT 7/50, Mir-25MT 3.5 / 30 (both focused at infinity)
Lens barrel: bayonet (used in the ZENIT-D camera)
Focusing screen: has a grid in the center in the form of two concentric circles with a diameter of 3 and 3.07 mm (ring bisector)
Shutter: focal, lamellar, vertical curtain movement
Shutter speeds: 1, 1/2, 1/4, 1/8, 1/16, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000 s, B and Slow
Full frame opening: 1/60 s
Sensitivity range of films used (for imprinting device): from 16 to 500 GOST
Tripod socket: 1/4 "
Dimensions with Industar-50MT lens: 140x103x100 mm
Dimensions with Mir-25MT lens: 140x103x128 mm
Food: 5 elements RC-53
Weight without lens and without case: 0.69 kg
The camera was supplied in two configurations - for rigid endoscopes and for flexible ones.
For flexible endoscopes such as Quartz-MT, Braslet-MT, Puchok-MT,
the camera was supplied without lenses and with two lenses for rigid endoscopes.
It had an imprinter - numbers from "1" to "31" were imprinted, which could be used as frame numbers in automatic imprinting mode,
or as a set of randomly selected numbers in manual mode, which was carried out with incomplete frame rewinding,
for which the lever platoon, there were marks indicating in which familiarity of the frame will be imprinted.
There is no exposure meter in the camera.
Issue I - exposures up to 1/500 s.