N°98434 · Family detail
CanonZoom·CANON EF mount·2003
Canon EF 17-40mm F/4L USM
Specifications01
MountCANON EF
Focal length17-40mm
Max aperturef/4
TypeZoom
Release year2003
Weight500 g
Filter size77 mm
Min focus distance0.28 m
Max magnification0.2398
Aperture blades7
Optical elements12
Groups9
AutofocusYes
StabilizationNo
Aperture controlNone
The aperture is controlled from the camera
Lens hoodEW-83E - Bayonet-type petal-shaped
TeleconvertersNot compatible
EraDigital era
Production statusDiscontinued
Additional Info02
Lens TypeWide-angle zoom lens
Summary02
Canon EF 17-40mm f/4L USM is an EF-mount zoom lens for wide-angle to standard views. It uses a constant f/4 maximum aperture and is suited for landscapes and general photography.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Canon EF mount has a flange distance of 44 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Native lenses set the aperture, and often the focus, electronically. On a plain adapter they do not work. Use an electronic adapter made for this pair; for many pairs nobody makes one. Fully manual lenses are the exception.
- Sony EAdapter · 26 mm
The camera mount (46.1 mm) is narrower than the lens mount (54 mm). A large rear element can darken the corners.
- Canon RFAdapter · 24 mm
- Nikon ZAdapter · 28 mm
- Fujifilm XAdapter · 26.3 mm
- L-MountAdapter · 24 mm
The camera mount (51.6 mm) is narrower than the lens mount (54 mm). A large rear element can darken the corners.
- Micro Four ThirdsAdapter · 24.75 mm
- Fujifilm G (GFX)Adapter · 17.3 mm
Covers full-frame: it can vignette on a medium format sensor.
- Canon EF-MAdapter · 26 mm
- Canon EFNative
No plain adapter reaches infinity focus on: Nikon F.
Other Mounts03
No alternate mounts are indexed for this family yet.