Canon CT 28mm F/3.5

Wide-angle prime lens • Film era • Discontinued • Collectible

  • Announced:
  • · 1954
  • Production type:
  • · Small-batch production
  • Availability:
  • ● Sold out
  • Country of design:
  • · Japan
  • Original name:
  • · Canon Camera Co. CANON LENS CT 28mm f:3.5
  • Class:
  • · Slow full-frame wide-angle prime lens

Model history (2)

■Serenar / Canon 28mm F/3.5 [I] LSM • Pancake lensM6 - 41.00mS.VI 1951 ●
—Canon CT 28mm F/3.5 1954 ●
■Canon 28mm F/3.5 [II] LSM • Pancake lensM6 - 41.00m⌀40 1957 ●

Specification

Optical design:
35mm full frame
28mm
F/3.5
6 elements in 4 groups (Double Gauss derivative)
Contax (Outer mount)
75.4° (35mm full frame)
Diaphragm mechanism:
Diaphragm type:
Manual
Aperture control:
Aperture ring
6 (six)
Focusing:
Coupled to the rangefinder:
Yes
0.90m
Focusing modes:
Manual focus only
Manual focus control:
Focusing ring
Physical characteristics:
<No data>
<No data>
Accessories:
Series VI
Not required

Source of data

  • Canon lenses. Directions and tables (January 1955).

Manufacturer description

CONTAX MOUNT CANON 28mm f:3.5 Ultra-Wide Angle Lens

Except for the mount, this lens is identical to the Canon 28mm f:3.5 ultra-wide-angle lens with screw-in mount.

The Contax-type mount couples to the rangefinder of the Contax or cameras of similar design.

From the editor

The only lens made by Canon for 35mm film rangefinder cameras with CONTAX mount.

The lens appeared in the Price List "The Canon system of photography" (effective July 1st, 1954), however, the Canon booklet published in September 1955 no longer mentions the lens.

Canon's claim that the CONTAX-mount version is identical to the lens with screw-in mount is not entirely accurate, because the closest focusing distance of the CONTAX-mount version is 0.9m, while the screw-in mount version focuses from 3.5 ft. (which is roughtly 1m).


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