Photo ID Quick Select

Canon EF 17-40mm f/4L USM

Estiasis rating:9.0
photozone
4/5
Cameralabs
83%
User Rating @ fredmiranda
9/10
User Rating @ amazon
4.6/5
User Rating @ bhphotovideo
4.7/5
User Rating @ slrgear
8.8/10
Canon EF 17-40mm f/4L USM
Canon EF 17-40mm f/4L USM
Add to Compare List
Initial Price: 
$830
  • Super Spectra coating
  • Three aspheric elements
  • Super UD (Ultra-low Dispersion) glass
  • 7 blades (Circular aperture)
  • Resistant to dust and moisture
  • Metal mount
Canon EF 17-40mm f/4L USM
Canon EF 17-40mm f/4L USM
Canon EF 17-40mm f/4L USM
MTF Charts: 
MTF Chart Wide
MTF Chart Tele

Overview

Description by Canon:

The EF 17-40mm f/4L USM is an ultra wide-angle zoom lens that offers excellent image quality and a constant maximum aperture. Its compact, lightweight body makes it an ideal travelling companion.

  • Superb optical performance throughout the zoom range
  • Fast autofocus speed
  • Highly resistant to dust and moisture
  • 28cm minimum focusing distance at all focal lengths

A high-quality, wide-angle zoom for a variety of subjects.

Ultra-wide or standard zoom
The EF 17-40mm f/4L USM acts as an ultra-wide angle zoom on film or full-frame digital EOS cameras. On DSLRs equipped with APS-C sized sensors it acts as a standard zoom, giving an angle of view equivalent to a 28-70mm lens on a full-frame camera.

Close focusing
Minimum focusing distance is just 28cm throughout the entire zoom range.

Superior optical performance
The EF17-40mm f/4L USM has 12 lens elements arranged in nine groups. Super Spectra coating ensures excellent colour balance and minimises ghosting and flare. To provide superb image quality over the complete 17-40mm zoom range the lens uses three aspheric elements. Super UD (Ultra-low Dispersion) glass prevents chromatic aberrations.

 

Ultrasonic focusing
A ring-type ultrasonic motor drives autofocus extremely quickly, and in near silence. Excellent holding torque ensures the point of focus is reached accurately, without overshooting. Furthermore, full-time manual override is available, making it possible to adjust focus without leaving AF mode.

Non-rotating front element
The front of the lens does not rotate, which makes using specialised filters, such as polarisers and graduates, easier. A drop-in gelatine-filter holder can be found at the back of the lens.

 

Smooth background blur
A virtually circular aperture diaphragm gives out of focus regions a softer, more uniform feel. Sharp foreground objects stand out against a smooth blurred background.

Weather resistant
Highly resistant to moisture and dust, the EF17-40mm f/4L USM is ideally suited for use in harsh environments. Environment friendly lead-free glass is used throughout its construction.

Reviews

"The Canon EF 17-40mm f/4 USM L is one of the most popular L class lenses thanks to its relatively affordable price and its dual purpose scope - it can serve as a standard zoom lens on APS-C DSLRs and it's an ultra-wide zoom lens with an attractive range on full format DSLRs.

Post date: 06/02/2012 - 23:14

"The Canon 17-40mm f/4 L is a high quality lens with a full-frame image circle that showed really exceptional performance on the EOS-20D we used to test it with. (The EOS-20D has a nominally APS-C size sensor, so corner sharpness and distortion will be better than if the lens is used on a camera with a

Post date: 20/01/2012 - 00:00

"Weighing only 500g, the 17-40mm f/4L is probably among the lightest L series zoom lenses available at present. The signature red stripe around the end of the lens barrel reminds you that this is considered one of Canon's professional spec lenses.

The barrel has a tough textured finish that should resist showing marks plus the dust and weather

Post date: 12/06/2011 - 00:00

"Being designated an L lens almost guarantees that the build quality of this lens will be good to excellent and you will not be disappointed in this area. The design incorporates the usual controls, a zoom ring marked at 17, 20, 24, 28, 35 and 40mm, a distance window with no attempt at a DOF scale, and a well torqued manual focus ring. There is an MF/AF switch to the left of the distance window, and that is about

Post date: 02/09/2010 - 00:00

"The Canon EF 17-40mm f/4.0 L USM Lens ships with a Canon EW-83E lens hood and a Canon LP1319 soft lens pouch. The shape of the hood (very wide and very short) makes one question whether it actually helps. It does almost nothing for lens protection - and nearly nothing for image quality when used on a 1.6x FOVCF body. It also makes storage inefficient. With the hood removed, the 17-40

Post date: 17/05/2009 - 00:00

"The Canon EF 17-40mm f/4 USM L, released in may 2003, is the latest of Canon's full frame ultra-wide zoom lenses. On APS-C DSLRs its field of view resembles a classic ~27-64mm standard zoom on full frame cameras so it is well suited for both formats but with different scopes. Thanks to its relatively

Post date: 08/02/2009 - 18:56

Specifications

Initial Price: 
$830
Release Date: 
05/2003
Specifications
Lens type: 
Zoom
Lens Mount: 
Canon EF mount
Canon EFS mount
AF Motor type: 
USM
Optical characteristics
Focal Length: 
17 - 40mm
Internal zooming: 
Yes
Angle of view: 
104° - 57.5°
Zoom Ratio: 
2.4x
Max Magnification: 
0.2x
Lens construction: 
12 elements in 9 groups (3 aspheric elements Super UD glass)
Diaphragm Blades: 
7 aperture blades circular opening
Maximum Aperture: 
f/4.0
Minimum Aperture: 
f/22.0
Aperture ring: 
No
Internal Focusing: 
Yes
Front lens element rotating: 
No
Minimum Focusing Distance: 
0.28m
Distance Scale: 
Yes
Full-Time manual focus: 
Yes
Auto Focus / Manual Focus switch: 
Yes
Stabilization system : 
No
Physical characteristics
Diameter: 
83.0mm
Length: 
97.0mm
Weight: 
475.0 g
Body material: 
Plastic with metal mount
Weather sealing: 
Yes
Weather sealing details: 
Dust and moisture resist
Filter Diameter: 
77mm also Gelatin filters can be placed on the rear section of lens
Lens Hood included: 
Yes

Compatible Cameras

A notice Our vast database is currently being re-constructed. Estimated finishing date is sometime in June/July 2012. Bookmark us and check back again for the grand opening of the ultimate Lens database. The Estiasis.com team

Click to add to compare list
Canon EOS 100D Front View
Click to add to compare list
Front View
Click to add to compare list
Canon EOS 1D Mark II N Front View
Click to add to compare list
Canon EOS 1D Mark III Front View
Click to add to compare list
Canon EOS 1Ds Mark II Front View
Click to add to compare list
Front View
Click to add to compare list
Click to add to compare list
Canon EOS 20D Front View
Click to add to compare list
Canon EOS 20Da Front View
Click to add to compare list
Canon EOS 300D Front View
Click to add to compare list
Front View
Click to add to compare list
Canon EOS 40D Front View
Click to add to compare list
Canon EOS 550D Front View
Click to add to compare list
Canon EOS 5D Front View
Click to add to compare list
Click to add to compare list
Click to add to compare list
Canon EOS 600D Front View
Click to add to compare list
Click to add to compare list
Click to add to compare list
Canon EOS 6D front view
Click to add to compare list
Canon EOS 700D Front View
Click to add to compare list
Click to add to compare list
Canon EOS-1D Mark IV Front View

Compatible Teleconverters

Selected Items
Click to close the selection preview
Compare List
Teleconverters: Click to see the selected items
Click to Compare the selected items
Flashes: Click to see the selected items
Click to Compare the selected items
Lenses: Click to see the selected items
Click to Compare the selected items
Cameras: Click to see the selected items
Click to Compare the selected items