Canon EF 17-40mm F4.0L USM Specifications

 

Side view of the Canon EF 17-40mm F4.0L USM

Photo © 2012 by LensTests.com

 

 

Compatibility:
analog/digital

Diagonal Angle of View:
104° - 57.3°

Maximum Magnification:
1:4.2

Minimum Aperture:
F22

Number of Aperture Blades:
7

Iris Pattern:
rounded (Ken Rockwell states polygonal)

Minimum Distance:
28cm

Filter Thread:
77mm

Maximum Diameter:
84mm

Length:
97mm

Weight:
500g

Focus Type:
Ring-USM, internal focus mechanism, parfocal

Full Focus Throw:
120°

Dual Pixel CMOS AF:
supported

Zoom Type:
rotary

E-TTL II Distance Information:
yes

IR Capability:
reported by Lens Play, IR Forum postings confirm as well as deny

Lens Hood:
EW-83E

Produced:
2003

Tests:
PhotoZone tested on EOS 350D, 50D and 5D Mark II; DxO Labs; SLRgear; Photodo; Popular Photography

PopPhoto Measurements:
17.58-39.66mm F4.14-3.98 at 1:8.7-1:3.64

 

Additional Information:
The lens received the TIPA Interchangeable Lens Award 2003.


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