Funleader Contax Planar 35mm f/2

Funleader Contax Planar 35mm f/2

This lens is unusual in how it brings a Contax-branded Planar 35mm f/2 optical design into a native Leica M fitting rather than relying on an adapter ring. Funleader, a maker known for products that bridge Contax G and Leica M systems, assembles the lens so that it mounts directly to M-mount bodies and works with their rangefinder mechanism. The result is a moderately wide reportage-length lens that stays physically small, with a 56 mm diameter and a barrel only about 29 mm long, and a modest 160 g weight that suits compact M cameras.

The optical layout uses a seven-element design arranged in five groups, a configuration consistent with the Planar lineage from which the lens takes its name. The aperture is built around seven blades and opens to a maximum of f/2, while focusing reaches down to a 0.7 m minimum distance and is coupled to the camera rangefinder for accurate manual focus. The lens accepts 46 mm filters and is offered in a two-tone finish. It is not six-bit coded, so users of newer digital M bodies who want automatic lens recognition would need to set the profile manually.

Publicly documented production history, version differences, and independent technical testing for this specific configuration are limited, so claims about coating revisions, finish variants, or serial-number ranges are not made here beyond the confirmed specifications.

Optical qualities

Rendering Detailed, independently verified rendering data for this exact lens is limited. As a Planar-type 35mm f/2 design, it belongs to a family generally associated with even field performance and well-controlled rendering, but specific, sourced measurements of its sharpness, contrast, bokeh, flare behavior, distortion, or vignetting were not available to confirm here, so no performance claims are asserted beyond what the optical formula and aperture imply.