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

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

Compatibility:

analog/digital

Diagonal Angle of View:

104° - 57.3°

Maximum Magnification:

1:4.2

Minimum Aperture:

F22

Number of Aperture Blades:

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:

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.