High Quality Content by WIKIPEDIA articles! The Leicaflex was the first series of 35mm single-lens reflex (SLR) cameras manufactured by Leitz. The Leicaflexes were fully mechanical cameras marketed between 1964 and 1976, in response to the rapid increase in popularity and usability of SLRs during this period. They were extremely durable, and superbly finished, but their appeal was limited by their failure to keep pace with the state of the art in SLR design, their somewhat limited selection of accessories, and their extremely high price in comparison with their Japanese competitors. They were ultimately replaced by the R series Leicas developed by Leitz with the assistance of Minolta under a cooperation agreement between the two companies.