Canon Serenar 50mm f/3.5 II

Canon Serenar 50mm f/3.5 II

Introduced in August 1952, the Serenar 50mm f/3.5 II is a compact collapsible standard lens for coupled Leica thread mount rangefinder cameras. Canon combined a four-element, three-group optical design with a space-saving retractable barrel.

Optical qualities

Rendering

The four-element, three-group construction favors a classic, restrained rendering. Central definition is useful at wider apertures, while contrast and consistency across the frame improve when stopped down. Results depend strongly on coating condition, haze and mechanical alignment in surviving examples.

Handling

The lens focuses to 1 m and accepts 34 mm filters. It measures 47 mm in diameter and 37.5 mm in length, with a listed weight of 144 g. The collapsible barrel makes the lens easy to carry, but it should only be retracted after confirming adequate clearance inside the camera body.

History

Development and Launch

Canon marketed this second Serenar 50mm f/3.5 version in August 1952 as a compact standard lens for its screw-mount rangefinder system.

Production Evolution

The Type II retained the established four-element, three-group formula while presenting it in a later coupled LTM barrel. It belongs to the final Serenar-branded period before Canon increasingly used its corporate name on lenses.

Special Editions/Variants

Minor engraving and finish variations may occur within production, but they do not establish a separate optical profile here.

Collector Notes

The collapsible mechanism, Serenar engraving and small 34 mm filter thread are useful identification points. Smooth extension and locking action are important when assessing a sample.