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Canon EF 17-40mm f/4L USM 35mm Zoom

4.6/5 (75 Reviews)
Focal Length : 17mm - 40mm | Max. Aperture : f/4  | Focus : Autofocus  


  • Camera Format35 mm SLR
    Lens TypeZoom Lens
    Focal Length17mm - 40mm
    Lens Max Aperturef/4
    Focus TypeAutofocus
    Macro LensWithout Macro Lens
    MountCanon EF
    Closest Focusing Distance10.8 in
    Picture Angle57 - 104 degrees
    Attachment / Filter Size77 mm
    Groups / Elements12 Elements in 9 Groups
    Designed for Digital CameraYes
    Diameter3.3 in
    Length3.8 in
    Weight17.64 oz
    MPN8806a002
    Product ID20946393

Product Description

A new and affordable L-series ultra-wide-angle zoom lens that's ideal for both film and digital SLRs.
  • Inner focusing system with USM
  • Min focus: 0.28m / 0.9 ft.
  • Screw-in or rear gel filters


  • Review Options:  Sorted by Latest Review | Sort by Best Rating

    Reviews 1 - 5 (75 Reviews Total) | Next 15

    User Reviews

    Overall Rating:5
    Value Rating:5
    Submitted by poker a Intermediate

    Date Reviewed: March 22, 2010

    Strengths:    Weather-resistant construction
    Affordable L series lens
    Light weight


    Weaknesses:    The lens hood blocks the built in flash in my former Canon 30D

    Bottom Line:   
    I use to have the Tamron 17-50 f/2.8. I sacrificed the f2.8 max aperture for Canon L glass and build quality. I'm glad I did. My past Tamron accumulated much dust over its use and non-Canon lenses have poor resale value. the image quality from this lens is what you would expect from a Canon L: series lens. The f4 aperture has been enough for my occasional indoor non-flash shots.

    This lens on full frame has a fun yet mild fish eye effect. On a 1.6 crop factor DSLR, it's a good walk around lens.

    My only problem is that the lens hood blocked the pop up flash on my past Canon 30D.

    Expand full review >>

    Duration Product Used:   11-20 years

    Price Paid:    $750.00

    Purchased At:   Canoga Camera

    Similar Products Used:   Tamron 17-50 f2.8

    Type of photography:   Outdoor


    Overall Rating:5
    Value Rating:5
    Submitted by UsaFromAbove a Professional

    Date Reviewed: August 23, 2009

    Bottom Line:   
    Excellent Lens!

    The 17-40 I mostly use it for real estate photography on a 5D. I also use it for aerial pictures although it is a bit heavy for it.

    For interior shots it is great because you need not worry about the F/4.

    Image quality is also good. Weight for average use is good as well.

    It is good at wide 17, however there is distortion as you can see: www.usafromabove.com

    Look for the interior pictures. I have tried to eliminate distortion but I couldn’t 100%

    I would recommend it.

    Expand full review >>

    Duration Product Used:   6-10 years

    Price Paid:    $700.00

    Purchased At:   ebay

    Type of photography:   Outdoor


    Overall Rating:5
    Value Rating:5
    Submitted by Gary Lee a Intermediate

    Date Reviewed: December 4, 2007

    Strengths:    Sharp,fast focus, handles great,dynomite colors--OUTSTANDING!

    Weaknesses:    None


    Bottom Line:   
    This is a great lens! I was surprised at how fast it will focus and how sharp the photos are. I only wish I would have purchased it years ago. I have photos that would have been great if they had been taken with this lens. This is my first L lens, but a 70-200 F4 will be on it's way next week. also, I can't say enough good things about ordering from B&H. This was the fifth time I have ordered from them, and I have never had a problem.

    If you are looking for a great wide angle zoom, THIS IS IT! A great match for my 20D, and I am sure it will be great for the Canon 5D that is in my near future.

    Expand full review >>

    Duration Product Used:   21+ years

    Price Paid:    $629.00

    Purchased At:   B&H

    Similar Products Used:   Canon 18-55--Canon 28F 2.8--

    Type of photography:   Outdoor


    Overall Rating:4
    Value Rating:5
    Submitted by Lior Dagan a Expert

    Date Reviewed: September 12, 2007

    Strengths:    Weight, overall picture quality.
    Price (especially refurbished).
    This camera has WAY better build than my sigma 24-70 f/2.8, and picture quality, and AF is MUCH faster on my 20D


    Weaknesses:    Not f/2.8, could use a wider zoom range.

    Bottom Line:   
    I have bought this lens refurbished at Adorama.
    My powerhorse lens, no doubt, on my Canon 20D Camera.
    I have used it in:
    Thailand, China, Ski tours, the Israeli desert, skiing resorts in Europe, California, Canada, from below freezing to scorching heat.
    0 problems. I\d give it a 4, as larger zoom range and IS would make it a 5.

    Expand full review >>

    Duration Product Used:   21+ years

    Purchased At:   Adorama

    Similar Products Used:   Sigma 24-70 f/2.8

    Type of photography:   Other


    Overall Rating:3
    Value Rating:5
    Submitted by yalazy a Intermediate

    Date Reviewed: August 26, 2007

    Strengths:    Great build quality and nice to use. Good colours.

    Weaknesses:    First, I use it on a Canon 5D, so weaknesses are more obvious than on an APS-C sensor camera. I find it a bit on the soft side, and corners definitely soft at f/8. On the other hand I have not owned a critically sharp wide-angle that goes down to 20mm or less. I previously owned the 16-35/2.8 (first version), and it was also very soft in the corners, but a little sharper in the center.

    Bottom Line:   
    Good value for money.

    Expand full review >>

    Duration Product Used:   6-10 years

    Similar Products Used:   Tokina 17/3.5, Canon 20/2.8, Canon 16-35/2.8, Canon 10-22 on 20D




    Reviews 1 - 5 (75 Reviews Total) | Next 15

    Review Options:  Sorted by Latest Review | Sort by Best Rating

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