Leica Elmar 9cm f/4 - Leica LTM Mount

The Leica Elmar 9cm (90mm) f/4 is a classic telephoto prime lens for the Leica Thread Mount (LTM/M39) system. Produced for several decades in various finishes, including black and chrome, it is a four-element triplet-derived design. It is highly regarded for its compact, slender profile and its ability to produce sharp images with a vintage aesthetic. It is a popular choice for portraiture on both film Barnack-style Leicas and adapted digital mirrorless cameras. Check for haze or 'fogging' on the internal elements, which is a common occurrence in lenses of this age. The aperture ring should click clearly, and the long focus throw should be smooth without dry spots in the grease. SDS inspects the glass for cleaning marks (fine scratches) on the soft front coatings. If the lens is a collapsible version, ensure the locking mechanism is secure when extended to maintain optical alignment.