The Leotax F is a Japanese 35mm rangefinder camera introduced in 1954 by Showa Optical Works (Showa Kogaku), part of the Leotax line of Leica screw-mount bodies built in postwar Japan. It used the M39 thread mount and was positioned as a domestic alternative to imported Leica rangefinders of the period.

With only two recorded UK auction hammer results to draw on, the picture in 2026 is thin: a 1999 Christie's sale at £299 and a March 2026 result of £81, giving a wide spread that reflects how condition and provenance drive what a Leotax F is worth today. Recent saleroom evidence suggests a clean working example sells for the lower-to-middle two-figure to low three-figure range, but the small sample means the price a given body fetches at auction can vary sharply.