Canon EF 28-105mm F3.5-4.5 USM Specifications
Diagonal Angle of View:
75° - 23.2°
F22 - F27
Number of Aperture Blades:
Ring-USM, Super Inner Cam (inner focusing mechanism with floating elements)
Dual Pixel CMOS AF:
not supported (camera will switch to Contrast AF)
E-TTL II Distance Information:
reported by IR Forum
EW-63 (+63II (size: 81 x 40mm))
1992 - 2000
The front lens protrudes far into the filter thread - a distance ring might be required to use some filters (esp. effect or closeup lenses, true for B+W +10 Close Up lenses for example).
*An early version had 5, the later version had 7 aperture blades. The early version has a flower shaped symbol for Macro position printed on the barrel, where the later version just reads "Macro".
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