Periflex

From Camerapedia.org

The Periflex was a line of British cameras made by Corfield in the 1950s. They had a focal plane shutter and interchangeable lenses, mostly 39mm screw mount but some were made with 42mm screw mount or other mounts.

Their main peculiarity was a periscopic focusing help mechanism: with a button you could lower a periscope in the exposure chamber, that acted as a reflex finder showing only the central part of the image. The picture framing was made through a basic external viewfinder.

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