Difference between revisions of "Cosina CT-7"
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* [http://www.butkus.org/chinon/cosina/cosina_ct-7/cosina_ct-7.htm Cosina CT-7 manual] at [http://www.orphancameras.com Mike Butkus' Orphan Cameras] | * [http://www.butkus.org/chinon/cosina/cosina_ct-7/cosina_ct-7.htm Cosina CT-7 manual] at [http://www.orphancameras.com Mike Butkus' Orphan Cameras] | ||
* The CT-7 features [https://books.google.com/books?id=UWTtBplKGnUC&lpg=PA55&vq=Cosina&dq=Cosina&pg=PA55#v=onepage&q=Cosina%20CT-7&f=false advertised in the June 1981 Popular Photography, pg. 55], via [https://books.google.com/books Google Books] | * The CT-7 features [https://books.google.com/books?id=UWTtBplKGnUC&lpg=PA55&vq=Cosina&dq=Cosina&pg=PA55#v=onepage&q=Cosina%20CT-7&f=false advertised in the June 1981 Popular Photography, pg. 55], via [https://books.google.com/books Google Books] | ||
| + | * The CT-7 [https://books.google.com/books?id=VU48j2-6OCEC&lpg=PA106&vq=Cosina&dq=Cosina&pg=PA103#v=onepage&q=Cosina%20CT7&f=false tested in the February 1982 Popular Photography, pg. 103], via [https://books.google.com/books Google Books] | ||
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Revision as of 00:18, 13 May 2021
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| Cosina Computer CT 7 image by Luis Ant. Rivera (Image rights) |
The Cosina CT-7 also known as Cosina Computer CT7 is a manual focus 35mm SLR from Cosina, announced in 1980.[1] It accepts K mount type lenses.
This camera was also sold as the Quantaray RZ 800 for the Ritz Camera shops in the North America, as well as the Petri GX-4.
It has an electromagnetic metal focal plane shutter with speeds from 8s to 1/1000 in automatic aperture priority mode, and 2s to 1/1000 with B in manual mode. Shutter speed is set by the up and down buttons on the shoulder area of the camera. Flash sync is at 1/100 a sec. The self-timer is electronic with a delay of approx 10 sec.
The CT-7 features a center-weighted, open-aperture TTL metering system with match-LED display (and over indicator). In manual mode the viewfinder's 11 shutter speed LED's aid in proper setting. A LT (Long Time) lamp is lit to signify a 2 to 8 sec. shutter speed in auto mode. The meter has a range of 2 to 19 EV at (ASA 100), and can be set for film speeds from 25 to 1600 ASA. The film transport uses a manual film advance lever and a rewind crank. A Cosina auto-winder accessory was also available for the camera. The CT-7 uses two 1.5v SR44 batteries.
Notes
- ↑ It was the flagship model listed in a slate of Cosina introductions in the April 1981 Popular Photography, pg. 222. Cosina began advertising in the May 1981 Popular Photography, pg.3 stating: "in North America, Cosina equipment has been sold only under other brand names. But now … Cosina is establishing its own name in the USA and Canada." (Scans via Google Books.)
Links
- Cosina CT-7 manual at Mike Butkus' Orphan Cameras
- The CT-7 features advertised in the June 1981 Popular Photography, pg. 55, via Google Books
- The CT-7 tested in the February 1982 Popular Photography, pg. 103, via Google Books
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| Rebranded as Petri GX-4 image by Vagn1949 (Image rights) |
