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September-October, 1939
THE CINE-TECHNICIAN
91
BackWinding Knob. Rangefinder. Wewfinder. Contact Roll. Shutter speeds. Press Button.VVinding Knob. Back Winding Knob.
Speeds 1/20-1 sec.
Spool Chamber. F.R Shutter. Film Gate. Film. Brake. Tripod Screw. Lock. isrrri^ — -i 1 1 — si Iris Diaphragm.
Lens Hood.
Elmar lens F/3.5,5cmfocus.
Contra Spool
Focusing Lever.
Receiving Spool.
Film Gate. Pressure Plate. Brake. Shutter Drum. Film.
Speeds 1/20-1 sec.
Contact Roll
Hekior lens F/1.9, Z3 cm focus
Rangefinder Ocular. Viewfinder Ocular. Contact Roll. Winding Knob.
Mechanism of a Leica Camera
to use the miniature, basing their objections chiefly on two points : firstly, that the size of the negative is too small to allow any rc-touchiug; and secondly, that the time necessary to ensure a high percentage of negative capable of being enlarged to fairly large sizes is too great to be commercial. The amateur, they say, is attracted by the comparative cheapness of the 3;>-mm. film and it out of 36 exposures he can get nine enlargeable negatives he is satisfied. This represents a 75% waste, but even so he still has more good negatives than on a normal roll-film. Tint professionally such wasteage would mean ruin .
But the professional has benefited indirectly. The knowledge gained by research has been applied to photography in general, not merely confined to the miniature section. Further, the increased spread of photography
[Courtesy : Leica News and Technique
has brought into existence a mass of photographic literature in which new theories and ideas are raised and discussed, and this has stimulated endeavours to create a new technique.
But the main result would seem to be just occurring. The precision and compactness of the miniature is being applied to larger cameras ; first to roll-film cameras using sizes up to 3^ x 2\ ins., and now there are appearing reflex cameras of small size yet capable of making a negative large enough to give a contact print. The old handcameras were very good and efficient, but if equipment can be made which overcomes the professional criticism of the miniature yet retains its advantages then there will be an all-round gain which can only be to the advantage of photography.