The Leica Summicron 50mm f/2 is the standard-lens mainstay of the Leica rangefinder system, made in both 39mm screw and M bayonet mounts and catalogued by Laney under "Screw-Mount, M-Mount & Visoflex Lenses" with a production span given as 1953–current. It began as a collapsible design (screw mount 1953–1961, M-mount 1954–1956), was replaced by a rigid second optical version (M-mount 1956–1968, screw mount 1960–1963) alongside the close-focusing dual-range model for the M3, and a third optical design followed from 1969 to 1979. It was designed as the fast general-purpose normal lens for reportage and everyday photography, and remains the lens most Leica bodies of the period were sold with.

No UK auction hammer results for this lens are recorded in our sales data at present, so we are not quoting a price range or median value here as of 2026 — any figure would be guesswork rather than evidence. Once saleroom results are logged, this page will show what the Summicron 50mm f/2 actually sells for at hammer, wholesale levels excluding commission, with the variant spread noted separately: the screw-mount rigid version is the scarce one (Laney records 1,160 examples made in 1963 against 63,055 rigid bayonet lenses in total), and the dual-range and black paint 11117 versions are similarly thin on the ground compared with the collapsible screw and bayonet lenses that ran to 57,980 and 52,702 units. Until then, treat any single asking price you see as a retail figure rather than a market worth.