Petri Computor 35
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| Petri Computor 35 (with red filter fitted) image by Michele M. F. (Image rights) |
The Computor 35 is the first in a series of 35mm rangefinder cameras made in Japan by Petri.
Original model: the Computor 35
The Computor 35 has automatic exposure via a CdS cell mounted on the front of the lens (inside the filter thread) and electronically-controlled shutter. There is a coupled rangefinder operated by the focussing ring with a lever attached for one-finger focussing (shown in the picture, to the right of the lens). The film speed is set by a ring at the front of the lens between 25 - 800 ASA.
The lens is labelled C.C. Petri 1:2.8 f=40mm, stopping down to f22, and there is an aperture ring. However, in normal use, the aperture ring is set to E.E. (presumably for electronic exposure), and both aperture and shutter speed are selected automatically according to the meter reading. The manual aperture settings are intended for use with flash; when any manual aperture is selected, the shutter speed is set to 1/30 second.
The shutter gave speeds from 4 to 1/250 second:[1] with green and red LEDs on the top of the camera (to the right of the hot shoe) indicating whether the selected speed is above or below 1/30 second (i.e. warning of camera shake in hand-held use).
The camera was available in black or silver-topped finish. It must have a battery to function.[2]
Computor II
The later Computor II had an f1.7 lens.
Notes
- ↑ Grenier-Natkin catalogue page from 1972, reproduced in the Computor 35 listing at Sylvain Halgand's site (see links below).
- ↑ This discussion on Rangefinder Forum suggests that the camera functions with any of several batteries. Given its age, a substitute for (two) 1.3V mercury cells may be correct, but one of the contributors to the RFF discussion found that more modern 1.55V silver oxide batteries worked well.
Links
- Petri Computor 35, Computer III on www.collection-appareils.fr by Sylvain Halgand
