Canon EF 28-135mm F3.5-5.6 IS USM Specifications
Photo © 2012 by Waldemar Belter
Diagonal Angle of View:
75° - 18°
F22 - F36
Number of Aperture Blades:
Ring-USM, Super Inner Cam (inner focusing mechanism with floating elements), varifocal
Full Focus Throw:
Dual Pixel CMOS AF:
E-TTL II Distance Information:
reported by Lens Play and IR Forum
29.63-137.90mm F3.70-n.a. at 1:11.4-1:3.8
The lens received the EISA Lens of the Year Award 1998-1999.
*There seem to be some minor incompatibilities and dysfunctionalities when using IS lenses with their IS activated with older analog EOS camera models. See EOS Documentation Project for details (slightly different for the 75-300mm F4.0-5.6 IS USM here).
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