In the 60’s, there was huge demand for buying a true portable professional 16mm camera simple yet dependable in Japan, Arriflex 16S (St), the camera that accepts both of 100 ft. (30 m) daylight spool and 200 ft. (60 m)/400 ft. (120 m) magazines, has registering pin and with easy-change drive motor alternatives, was a perfect answer, but not affordable for everyone in the business. So, DOI KOSAKUJO SEIKI SEISAKUSHO (DOI WORKS) decided to seize the opportunity by manufacturing a knock-off model of the venerable 16S, which is so similar. So doiflex 16 was born!
The manufacturer states:
Rugged, Reliable, Compact, Lightweight and Portable, it is the first low-priced professional 16mm motion picture camera which incorporates features found previously only in the most expensive cameras. The culmination of years of research and exhaustive field testing, the doiflex 16 combines American know-how with Japanese economy into an extremely versatile, precision built, quality camera which will perform to perfection for all the exacting requirements that are demanded by film producers, television newsreel cameramen, government, armed forces, education, medical, research, industrial and discriminating amateur users.
The above mentioned American know-how comes from F&B/CECO, Inc., the sole importer of doiflex 16 in the U.S. responsible for North and South America.
FILM MOVEMENT SYSTEM:
Intermittent pull-down claw movement, with precision registration pin.
150˚ fixed opening focal plane. 1/57th second exposure at 24 fps.
0.294×0.410 inches. (about 7.46×10.41 mm)
PRESSURE PLATE ASSEMBLY:
Double gate-channeled and spring mounted-hinged tor easy cleaning.
16mm 50′ (15 m) or 100′ (30 m) spools, daylight loading. Accepts B wind single or double perforation black & white or color 16mm film, with or without magnetic sound striping.
Note: The manufacturer was planned to market a 400′ (122 m) magazine in 1967 with a factory modification on the cameras to accept the new magazine, but never ever seen one yet.
Positive closing disc shutter with reciprocating balanced reflex mirror. Television cut off etched in viewer system. Built-in light trap, rotating eye piece. Viewer image is magnified 10X.
Three lens rotating turret with positive seating. Accepts standard C-mount lenses and zoom lenses. Adapters available for Arriflex and Mitchell lenses. Turret turning studs between lens mounts. Turret lock for using zoom or long telephoto lenses.
Base tapped to accept ¼ – 20 or ⅜ – 16 tripod tie down screws.
Variable speed motor: 8 volts DC
Stop motion motor: 115 volts AC
CAMERA DIMENSIONS Body only:
Height: 7 ⅞ inches (17.78 cm)/Length: 8 inches (20.32 cm)/Width: 4 ¾ inches (10.16 cm)
CAMERA WEIGHT Body only:
7 pounds (about 3.17 kg)
CONSTRUCTION AND FINISH:
Die-cast aluminum with polished fittings. Black wrinkle exterior.
Manually-operated rewinding crank device with frame counter is available.
The Kino-cosmicar lens sizes range from 12.5mm F.1.4 to 50mm F.1.9. All lenses are in black anodized aluminum mounts, have click stops to F.22, and focusing mounts calibrated in feet and meters.
When compared to the Arriflex 16S (St), the shuttle mechanism of doiflex 16 consists of double eccentric cams, as well as a focal plane shutter. The cam on the lens side is mounted on the shutter and the mirror for reflex viewing is connected to the cam follower (frame).
The cam on the film side has a coaxial double shape, the one for the pull-down claw while the other for registration pin matching with the cam follower having double frames.
See the difference! Despite the Japanese engineering is pretty good, this complex unique movement shows the German engineering and know-how.