Petri Computor II

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Petri offered this evolution of its 35mm rangefinder the Petri Computor 35 between 1972 and 1974[1]. The improvements of the Computor II were a faster f1.7 40mm lens, and a self-timer. The model name then changed to Petri ES Auto.

The camera appears to calculate programmed shutter and aperture selections automatically, despite a confusing F-stop indicator on the lens barrel, which seems to be just for the benefit of flash photography[2].

The CdS cell is placed just above the lens, inside the filter thread, allowing the meter to compensate for filters. The bright finder is not so very bright on this one, although it may have yellowed with age.



Notes

  1. Dates from Pbase page on the Computor II.
  2. The Computor II on 35mm-compact.com site shows a switch on the rear selecting F or A (assumed to be flash/Automatic) - which must disable the auto-exposure and enable the aperture control on the lens for flash.

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