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The Mecila Mag 150 is a film magazine made for TLR cameras. It replaces the hinged camera back. It was designed and at first made by Paul Lachaize of Lyon in the early 1950s. Later, Flash-Phot of Paris took over manufacture of the device.
- Mecila Mag 150 attached to a Semflex Automatic TLR, sold at the 39th Leitz Photographica Auction.
- US Patent 2819663, Photographic Cameras, filed 3 September 1953 and granted to Paul Lachaize 14 January 1958, describing the magazine; at Espacenet, the patent search facility of the European Patent Office.