Canon 28mm f/2.8

Canon 28mm f/2.8

Among Leica thread-mount wide-angles, the Canon 28mm f/2.8 occupies an unusual position: it is fast for its class yet remarkably small, and it is noticeably scarcer than the company's own 28mm f/3.5, which keeps it in steady demand among rangefinder collectors [1][2]. Canon listed its manufacture as beginning in 1957, roughly six years after the earlier Serenar 28mm f/3.5 of 1951, a gap that reflects the engineering difficulty of producing a faster wide-angle for the screw-mount system in that era. Many photographers come to the f/2.8 after good experience with the more common f/3.5 and are looking for the extra speed in a similar compact package.

Optically the lens uses a six-element design in four groups, and it couples to the rangefinder for accurate focusing down to one metre. The barrel is built from chromed brass and feels solidly made despite its light weight, with an infinity lock and click-stopped apertures running from f/2.8 to f/22 [3]. Reviewers note that it is one of the smallest 28mm lenses available, almost toy-like in the hand, and that its focusing ring is small and can feel fiddly in use. The 40 mm filter thread and short overall length make it easy to carry, and because it is an LTM lens it adapts readily to M-mount bodies with a thread-to-bayonet adapter.

Compared with the earlier Serenar 28mm f/3.5, the f/2.8 looks slightly more modern and marks an early shift in Canon's barrel design; the front glass sits more recessed and the aperture ring is larger and easier to read, though the two remain closely related in handling. Examples turning up today often come from Japan and may be marked in metres rather than feet.

Optical qualities

Rendering The lens is generally described as producing a classic, restrained look. Wide open it shows visible vignetting and is at its best in the central field, with sharpness spreading toward the corners as it is stopped down; reviewers report a usable level of across-frame sharpness by about f/5.6 and very good results around f/8. Contrast is moderate and fairly consistent through the aperture range, and colour rendering is slightly muted in the manner of older Canon optics [4]. Flare resistance is reported as good, and out-of-focus areas are rendered softly. Because comparatively few detailed tests exist, much of the assessment of this lens rests on a relatively small body of user reports rather than extensive published measurements.

History

Development and Launch Canon's rangefinder wide-angle line began with the Serenar 28mm f/3.5 around 1951, and the faster 28mm f/2.8 followed with a manufacture date given by Canon as 1957. The six-year interval is widely read as evidence of how demanding a faster 28mm was to design and build at the time, as well as of Canon's growing optical capability and the rising demand for fast wide-angle lenses. By the late 1950s and into the 1960s relatively few makers were producing screw-mount lenses in quantity, particularly wide-angles, which contributes to the lens's scarcity today.

Collector Notes The f/2.8 is decidedly less common than the 28mm f/3.5, and good examples command a premium that has risen over the years. Buyers are advised to inspect the chrome for pitting and the glass for haze, cleaning marks and fungus, since some such faults cannot be fully corrected even by a service. A clean, recently serviced example with clear glass is the safest purchase; the original leather case and a matching 28mm finder are desirable accessories, as a 28mm frame line is not present on many bodies. No major factory special variants of this lens are widely documented in collector sources.