aperture are provided on both sides of the Distance Scale Index Mark '4Q'. After the lens has been focused, read this scale, and
the depth of field will be the section sandwiched between the two readings of the used aperture.
For example, Iet us assume that the distance between the file plane and the subject on which the lens has been focused is 30
feets (10 meters). The depth of field will be 22 to 46 feet (7 to 16 meters) for f:4 and 13 feet (4 meters) to infinity (o) for f/16.
Infrared Film Compensation Mark:
When infrared film and a red filter are used in taking infrared photographs, read the Distance
Reading 23 aligned with the Distance Scale Index Mark 484 after the lens has been focused as in normal photography and then turn
the focusing ring to bring this reading in line with the Infrared Film Compensation Mark 47 before the shutter button is depressed for a
shot.
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Focal Plane Mark :
The distances shown on the Distance Scale 233 are those from the Focal Plane Mark "--" 15' which indicates
the position of the film plane.
FILM REWIND
After a pre-determined number of pictures have been taken on the film loaded in the camera, the film will be wound back into
the original cartridge. If the back cover of the camera is opened without rewinding the film, note that the film will be exposed to
light and the whole of the film will become useless.
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When the cocking lever no longer moves further after the advance of the last frame of the film, do not try forcibly to cock the
lever but put the lever back to the original position.
Take the cartridge out of the camera in the shade.