Shenzhen Powerfirst Technology Co., Ltd.
Main products:Laptop Battery,Camera Battery,Mobile Phone Battery,Photographic Accessory,Mobile Phone Accessory
Contact Us
  • Contact Person : Mr. jim
  • Company Name : Shenzhen Powerfirst Technology Co., Ltd.
  • Tel : 0086-755-28445330
  • Fax : 0086-755-28445332
  • Address : Guangdong,shenzhen,4th Floor ,No.228 Hekang north road ,bantian ,buji town
  • Country/Region : China
  • Zip : 518122


Product Detailed
Design for canon ET-65B ; Lens Hood for EF 70-300mm f/4.5-5.6 DO IS USM Lens name: LENS HOOD


very charming price and work as original

Product DescriptionThe Precision Design ET-65B Lens Hood is primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact. Dedicated lens hoods, such as the ET-65B, are designed to match the specific focal length of the lens it was designed for. >> Compatible with the following   lenses: for  Can  EF 70-300mm f/4.5-5.6 DO IS USM LensTechnical DetailsReplacement for Can  ET-65B Lens Hood.Compatible with Cano  EF 70-300mm f/4.5-5.6 DO IS USM Lens.Prevent unwanted stray light from entering the lens.Extra protection from accidental impact.Designed to match the specific focal length of the lens.

In photography, a lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare.

The geometry of the lens hood can vary from a plain conical section (much like a lamp shade) to a more complex cut sometimes called a flower, petal or tulip hood (as shown in the picture), which prevents the hood from blocking the field of view of the lens and producing vignetting. Flower shaped lens hoods are most often used on zoom lenses as a normal lens hood may block the field of view on some zoom settings.

Lens hoods are more prominent in long focus lenses because the field of view has a smaller viewing angle than of wide-angle lenses. For wide angle lenses, the length of the hood (away from the end of the lens) cannot be as long as those for telephoto lenses because of the viewing angle.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. Some lens hoods are flexible and collapse for storage.

In addition, they offer some physical protection for the lens due to the hood extending farther than the lens itself.

A lens hood used on the for EF 70-200mm lens. Note that from this angle no part of the glass lens surface is visible, as the line of sight is blocked by the lens hood.

 lens without and with hood.

Praktica camera - lens with lens hood.


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