Vintage wide-angle prime lens with L39 mount.
The Canon L39 19mm f/3.5 is an ultra-wide angle lens for the Leica Thread Mount (LTM/L39) system, produced by Canon for their rangefinder camera line. Ultra-wide lenses of this focal length on rangefinders require a separate optical viewfinder accessory as the standard viewfinder cannot show such a wide field of view.
19mm focal length, f/3.5 maximum aperture, Leica Thread Mount (L39/LTM) screw mount, requires external optical viewfinder for accurate composition on rangefinder cameras.
The Canon L39 19mm f/3.5 is an extremely rare ultra-wide rangefinder lens from the late 1950s–1960s, commanding collector interest for its rarity and historical significance. A separate 19mm optical viewfinder accessory is essential for framing. Compatible with Leica M cameras via L39-to-M adapter.
Inspect all elements carefully for haze, fungus, and coating condition. Confirm L39 thread engagement is clean. Check aperture blades. Verify whether a matching external viewfinder is included — value is significantly higher with the viewfinder.