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

SKU: CAN-EF17-40L
Key Features
  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/4 to f/22
  • One Super Ultra-Low Dispersion Element
  • Three Aspherical Element
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$1,199.00
RRP:  $1,440.00 
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Details

The Canon EF 17-40mm f/4L USM Lens is an L-series zoom featuring a constant f/4 maximum aperture along with a sophisticated optical design and durable construction. One Super UD element is featured, along with three aspherical elements, which help to reduce both chromatic and spherical aberrations in order to realize high sharpness, clarity, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting for improved contrast in difficult lighting conditions. Complementing the imaging capabilities, this wide-angle zoom also features a ring-type USM and internal focusing mechanism to afford quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. Additionally, this lens is weather-sealed for use in trying environmental conditions.

Specifications

Focal Length17 to 40mm
Maximum Aperturef/4
Minimum Aperturef/22
Lens MountCanon EF
Format CompatibilityFull-Frame
Angle of View104° to 57° 30'
Minimum Focus Distance11.02" / 28 cm
Maximum Magnification0.24x
Optical Design12 Elements in 9 Groups
Diaphragm Blades7, Rounded
Focus TypeAutofocus
Image StabilizationNone
Filter Size77 mm (Front)
Gel Filter (Rear)
Dimensions (ø x L)3.29 x 3.81" / 83.57 x 96.77 mm
Weight1.1 lb / 500 g

What's In The Box

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

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