Leica Elmar 90mm f/4

Leica Elmar 90mm f/4

Among Leica's short telephotos, the Elmar 90mm f/4 stands out for how little it asks of the photographer's bag. At roughly 300 grams and 82 mm long, it is a modest f/4 lens built for travel and discretion rather than speed, and it has remained a recognizable name in the M-mount 90mm range for decades. The lineage of the 9 cm Elmar reaches back to the screw-mount era, and the M-bayonet versions carry the design forward as a coupled rangefinder lens using the small 39 mm filter thread shared with many Leica optics [1].

The lens is a simple three-element design housed in an all-metal barrel finished in silver, with a ten-blade diaphragm and rangefinder coupling for accurate focus on M bodies. Minimum focus is one meter, typical for a 90 mm Leica telephoto of this generation. Earlier 9 cm Elmar bodies were offered with a removable front lens head that could be transferred to a Visoflex reflex housing for closer and longer work, and a close-focus adapter known as the OMIFO was available; engraving conventions changed over time, with early barrels marked in either feet or meters and later examples using a dual scale. Catalogue references for the silver Elmar include model numbers 11830 and 11130, and the lens has appeared under factory order codes such as ELANG-M and ELGAM.

The 9 cm Elmar was produced in more than one form across its history, with finish and knurling details that help separate the versions; a later barrel revision in the 1960s changed the knurling pattern relative to the earlier so-called rigid version. Published sources sometimes describe the optical cell as four elements in three groups rather than three elements; buyers comparing references should be aware that element counts cited for the various 9 cm Elmar generations are not always consistent across catalogues.

Optical qualities

Rendering Detailed, independently published rendering analysis specific to this lens is limited. As a simple, slow short telephoto of classic Leica design, it is generally regarded as a compact, well-corrected lens whose modest f/4 maximum aperture favors depth of field and portability over background separation. Claims beyond this should be treated with caution given the scarcity of consistent, source-backed testing.

History

Development and Launch The 9 cm f/4 Elmar is part of Leica's long-running family of compact 90 mm telephotos, with M-mount versions introduced in the mid-1950s alongside the bayonet M system that debuted with the M3. Across its production the lens was offered in successive versions, and it remained a long-lived member of the 90 mm lineup.

Production Evolution Documented changes include engraving conventions shifting from single feet or meters scales to a dual scale, and a knurling revision in the 1960s that distinguishes later barrels from earlier ones. The removable front lens head on earlier bodies allowed use with the Visoflex II, IIa, and III reflex housings.

Special editions No widely documented military, export, or rare factory finish variants of this lens are established in the source consulted; the principal distinctions are between the production versions and their barrel details rather than special editions.

Collector Notes When evaluating an example, check for internal haze, which is a common issue on older Leica telephotos and can reduce image quality even when the mechanics work well. Confirm the model number and order code against the finish, verify whether the front head is removable on earlier versions, and look for the matching accessories such as the ERKOM lens head and OMIFO close-focus adapter where relevant.