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

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

Product Code:

8806A002
Condition:
Brand New USA
Availability:
In Stock
Average Rating:

Our Price:
$749.00
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For Item: Canon EF 17-40mm f/4 L USM Zoom Lens
CAMETA CARE GOLD WARRANTY
•  Covers parts and labor
•  Fully Insured
•  No deductibles
•  Toll Free & Online Support
•  Transferable
•  Worldwide Coverage
•  Lemon Protection
CAMETA CARE PLATINUM WARRANTY
Also covers accidents and unintentional damage!
•  Accidental Damage
•  Normal / Abnormal Wear
•  Liquid / Impact Damage
•  Mechanical Malfunctions
•  Sand / Grit Damage
Coverage starts from date of purchase (Gold & Platinum)
* Platinum warranty must be purchased within 30 days
* Platinum warranty also includes all benefits of Gold warranty, but is valid in USA only.
 
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ITEM INCLUDES

Canon EF 17-40mm f/4 L USM Zoom Lens with:

  • EW-83E Lens Hood
  • Lens Case
  • Front & Rear Lens Caps
  • Instruction Booklets

$100 Mail-in Rebate Available when you purchase two or more eligible Canon EF lenses
(ends 12/31/2016) - Click for Details

Purchase includes 13-month CarePAK PLUS service plan from Canon
* Offer ends December 31, 2016 - Click here for details! *

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

High-performance, ultra-wide zoom.

The Canon EF 17-40mm f/4 L USM is an affordable L-series ultra-wide-angle zoom lens that's ideal for both film and digital SLRs. Superior optics are assured by the use of three Aspherical lens elements, in addition to a Super UD (Ultra-low Dispersion) glass element. Optical coatings are optimized for use with digital cameras.

This lens focuses as close as 11 inches (0.28m), and offers both Canon's full-time manual focus and a powerful ring-type USM for fast and silent AF. It has a constant f/4 maximum aperture, and offers the choice of screw-in 77mm filters or a holder in the rear of the lens for up to three gel filters. Finally, it offers weather-resistant construction similar to other high-end L-series lenses.

Key Features:

Ultrasonic Motor (USM)
Instead of large noisy drive trains powered by conventional motors, Canon USM lenses employ the minute electronic vibrations created by piezoelectric ceramic elements. The focusing action of the lens is fast and quiet, with virtually instantaneous stops and starts. USM lenses also draw minimal power from the camera, ensuring longer battery life.

Full-Time Manual Focus
This lens is equipped with a ring-type USM, which allows full-time manual focus in AF mode. This means you can manually fine-tune focusing as soon as autofocus is complete, without having to switch to manual focusing mode.

Aspherical Elements
Wide-angle lenses and fast normal-focal-length lenses often suffer from spherical aberration. When the light rays coming through the center of the lens do not converge at the same point as light rays coming through the lens edge, the image appears blurred because there is no sharp point of focus. Canon's Aspherical elements use a varying curved surface to ensure that the entire image plane appears focused. Aspherical optics also help to correct curvilinear distortion as one might find in ultra wide-angle lenses.

Super UD Glass Element
Canon's Super UD (Ultra Low Dispersion) glass element significantly reduces chromatic abberation, which often appears in photographs as color fringing at the edges of objects.

Dust and Water-Resistant Construction
L-series EF lenses are highly dust- and water-resistant thanks to rubber seals at the switch panels, exterior seams, drop-in filter compartments and lens mounts. Moving parts, such as the focusing ring and switches, are also designed to keep out environmental contaminants, providing reliable performance under harsh conditions.

Circular Aperture
Canon lenses featuring circular aperture diaphragms employ curved blades to create a smoothly rounded opening as the lens is stopped down. As a result, out-of-focus background highlights are rendered as natural-looking rounded shapes rather than as distracting polygons. These lenses deliver smooth, consistent stop-down action (even at 10 fps), near-silent operation and excellent optical characteristics.

Inner Focusing
An inner focusing lens has the focusing lens group(s) in front of the diaphragm, allowing for compact optical systems that produce faster AF. And because the front of the lens does not rotate to focus, filter orientation remains constant.

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Canon EF 17-40mm f/4 L USM Zoom Lens
– TECHNICAL SPECIFICATIONS –

Lens Mount: Canon EF
Focal Length: 17-40mm
Maximum Aperture: f/4
Diagonal Angle of View: 104° - 57°30'
Maximum Magnification: 0.24x (at 40mm)
Minimum Focus Distance: 0.28m / 0.9 ft.
Lens Construction: 12 elements in 9 groups
Diaphragm Blades: 7
Focus Type: Auto with full-time manual
Image Stabilization: None
Filter Size: 77mm
Dimensions (Diam. x Length): 3.3 x 3.8 in. (83.5 x 96.8mm)
Weight: 1.1 lb. (500g)

Compatible with the following Canon digital SLR cameras, including:

  • Rebel SL1
  • Rebel T3
  • Rebel T3i
  • Rebel T4i
  • Rebel T5
  • Rebel T5i
  • Rebel T6
  • Rebel T6i
  • Rebel T6s
  • EOS 60D
  • EOS 70D
  • EOS 80D
  • EOS 6D
  • EOS 7D
  • EOS 7D Mark II
  • EOS 5D Mark II III IV
  • EOS 5DS
  • EOS 5DS R
  • EOS 1Ds Mark II III
  • EOS 1D X
  • EOS 1D X Mark II
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