The only twin lens reflex camera that uses instant film is Instantflex TL70 manufactured by MiNT Camera which is compatible with Fuji instax mini film (film size , picture size ) . It is the world's first instant twin lens reflex camera. Gemflex is a subminiature twin lens reflex camera made by Showa Optica Works (昭和光学精機) in occupied Japan in the 50s. Gemflex resembles the well known Rolleiflex 6×6 twin lens reflex, but much smaller in size. The body of Gemflex is die cast from shatter proof metal. The smallest photography TLR camera using 35 mm film is the Swiss-made Tessina, using perforated 35 mm film reloaded into special Tessina cassette, forming images of . Goerz Minicord twin lens reflex made format on double perforated 16 mm film in metal cassette. 6 Element Goerz Helgor F2 lens, metal focal plane shutter B, 10, 25, 50, 100, and 400. Viewing lens uses pentaprism reflex optics for the viewing lens. Picture format on double perforated 16 mm film. Minox rebadged Sharan Rolleflex 2.8F classic retro TLR film camera, 1/3 scale 6x6 Rolleiflex TLR, using Minox cassette image size , 15 mm F5.6 glass triplet lens, mechanical shutter 1/250 sec.  Japan made Gemflex, a twin lens reflex using 17.5 mm paper back roll film. It has been argued that the medical gastroscopy camera, the Olympus Gastro Camera is technically the smallest TLR device.