as the successor to the Canon S II, this camera was first called the "S
IIb." The designation was soon changed to "II B."The hallmark
feature was the three-mode optical viewfinder. It had a positive and negative
lens element in an optical block which rotated to change the viewfinder
magnification. A lever could set one of three magnifications from 0.67x
to 1.5x to match the focal length of the interchangeable lens. This feature
received very high acclaim.
The lens mount
was a universal, threaded flange compatible with Leica. Later in the production,
a new diecast body was used to maintain precision and improve mass productivity.
Development of the fast Serenar 50mm f/1.9 lens (6 elements in 4 groups,
Gauss-type) was also completed and bundled with the II B as the standard
lens. (Canon Camera Museum)