Prior to the introduction of the Canon II B, with its improved viewfinder-rangefinder
for telephoto lenses, the Canon 135mm f4.0 lens was not rangefinder coupled. The 135mm telephoto lense show at the left
was the coupled 135mm telephoto introduced for use with the improved Canon three position viewfinder-rangefinder.
Canon, unlike most other lens manufacturers made a speciality of the 100mm
focal length. This focal length was on of the standard positions on most of the Canon 3 position viewfinder-rangefinders
of Canons prior to the Canon V. The 100mm f2.0, illustrated here in a late black finish of about 1959, as well as being
a massive piece of glass was also an excellent performer, being both sharp and relatively flare resistent, when used with
its furnished lens shade.