The Mecaflex is a 35mm SLR made by German designer Heinz Kilfitt, who is better known for having designed the successful Robot camera, and high precision lenses such as the Macro Kilar, and Voigtländer Zoomar (the first 35mm zoom lens). Presented at Photokina in 1951, it was first sold in 1953, they were manufactured for Kilfitt by Metz Apparatefabrik located in Fürth, Bavaria (West Germany). Production by Metz continued until 1958 but few units were actually built. Metz, dissatisfied with the collaboration withdrew from the partnership shortly afterwards. Production then shifted to Société d’Etude et Recherche Optique et Acoustique (S.E.R.O.A.) a camera maker in Monaco. This camera is better known as the Kilfitt Mecaflex, with the lenses also produced by Kilfitt.

It was a very aesthetically pleasing and compact camera at 9×6.5×6.5cm. However it was quite heavy at 700g. It had a flip-top cover which gave it very clean lines when closed. When opened to 90 degrees, the cover revealed the waist-level viewfinder and top-plate controls. The size of its exposures was a smaller 24×24mm, providing for more images on a film roll (some 50). One of interesting features was an early spring-loaded diaphragm. When the shutter and spring-loaded diaphragm mechanism of the Mecaflex are cocked, a bright, parallax-free ground-glass image appears, and this remains bright until the shutter is released. A push-up finder was also provided as an accessory. which could be inserted into the viewfinder

Like many other West German cameras, it too incorporated a Prontor behind-the-lens leaf shutter with speeds of 1 to 1/300s (+B). The camera had a bayonet mount, and used lenses designed by Kilfitt, and it was usually paired with a Kilar 40mm f/3.5 or f/2.8. The other lenses were the 40mm Makro-Kilar’s and Tele-Kilar 105mm f/4.5. Some additional lenses were made under license by SOM Berthiot (Paris). The camera was produced until 1958. It is possible to still find these for around C$1300-2000.

Specifications:

Type: 35mm SLR camera
Manufacturer: Metz (West Germany) ver.1, Kilfitt ver.2
Model: Mecaflex
Production period: 1953−1958
Format: 24×24mm on 135 film
Lens mount: bayonet
Standard lens: Kilar 40mm f/3.5
Shutter: leaf-shutter, Prontor-Reflex behind-the-lens
Shutter speeds: 1 to 1/300 sec., B (1 to 1/250s, B in the SEROA camera)
Viewfinder: waist-level viewfinder + central split-image rangefinder
Mirror: yes
Exposure meter: −
Flash synchronization: X, M
Self-timer: −
Aperture control: −
Film advance: lever wind
Weight/dimensions: 700 grams / 900×650×650mm