User Manual for Canon EF 17-40mm f 4L USM Lens Click to enlarge the picture
Contents of the user manual for the Canon EF 17-40mm f 4L USM
- Product category: SLR Lenses Canon
- Brand: Canon
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Canon SLR Lenses
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User manual for the Canon EF 17-40mm f 4L USM contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Canon product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Canon user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Canon product will considerably shorten its lifespan!
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Product description Best SLR Lenses of 2017 Read More Spanning a versatile wide-angle range, the EF 17-40mm f/4L USM Lens is a Canon 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. - Wide-angle zoom is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 27.2-64mm equivalent focal length range.
- Constant f/4 maximum aperture maintains consistent illumination throughout the zoom range.
- One Super Ultra-Low Dispersion glass element noticeably reduces color fringing and chromatic aberrations for high clarity and color fidelity.
- Three aspherical elements minimize spherical aberrations and distortions for improved sharpness and accurate rendering.
- Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.
- A ring-type Ultrasonic Motor (USM), along with an internal focusing system, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.
- Rounded seven-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.
- As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.
- In addition to the front 77mm filter ring, this lens also has a rear filter holder for up to three cut gel filters.
In the Box Canon EF 17-40mm f/4L USM Lens E-77 II 77mm Lens Cap cxuuzwzzdxasfwyfvbxubefb Lens Dust Cap E (Rear) EW-83E Lens Hood Lens Case LP1319 Limited 1-Year Warranty Macro Lens Buying Guide Todd Vorenkamp 11/27/2018 cxuuzwzzdxasfwyfvbxubefb Table of Contents
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Technical parametersCanon EF 17-40mm f/4L USM Specs | Focal Length | 17 to 40mm | | Maximum Aperture | f/4 | | Minimum Aperture | f/22 | | Lens Mount | Canon EF | | Format Compatibility | Full-Frame | | Angle of View | 104
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