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Mark's Quantaray D2-RZ Page

2-5-23: Made 1979 to 1983, although I read that Topcon dropped out of cameras in 1981. This is a rebadged Topcon RM 300, Came with a Cosina Cosinon-S 50mm f/2 Lens. Uses K-mount lenses. It has a metal focal plane shutter (good), uses LEDs for match needle exposure control, with a center weighted meter. Half-depressing the shutter release activates the meter. Max shutter speed is 1/1000th, and it even accepts a motor drive. I wondered if Topcon was related to Cosina (the lens that came with this camera) and it is not. Topcon was foremost a lens manufacturer. The camera originally had a Quantaray lens. Being more modern this camera is designed for 1.5 volt batteries, so less hassle trying to adapt or use the wrong ones. It seems like this is a mechanical camera, except the meter.
2-11-23: Received from Goodwill OK, pics below. Both the camera and lens seem to be in great shape. Needs batteries, no corrosion in the battery compartment. Go for film test if the meter works. Really like this one.
3-1-23: Camera has first test roll, some expired "Albertsons" color print film I found. Even if the colors are off it should tell me how well the shutter and meter are working, and if there are light leaks. I recently bought a Vivitar K-mount zoom lens for this and my other K-mounts, and an M42 to K-mount adapter to use all those prime (single focal length) lenses in the collection.
3-8-23: Thought the test roll was 24 exposures, stopped at 40 thinking something must be wrong. Rewound a lotta film, so I think they just overloaded the cartridge a little. The red and green led's are a little dim in daylight. The shutter and mirror are noisier than I like. Tested with the lens it came with, and the 75-210 zoom I bought separately.
4-10-23: Test roll of color negative film being processed. They say it's over 10 years old, so I don't expect much. I got back absolutely nothing.
8-6-23: Replaced light seals with new foam.
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8-17-23: Here are some pics after replacing the light seals. All shot on Arista EDU 100 ASA film, developed and scanned myself. Started getting double exposures at the end of the roll.

6-21-24 Rotational shoot with Kentmere 100 ASA film, developed wtih Caffenol-C for 8 minutes. This roll was shared with the Minolta Maxxum 7000i no 2. There were no feed problems. Lenses were the Cosinon 50mm F:2 (4543) K-mount, and a Tamron 28-200mm (1172) KAF mount.

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