User manual
Bower 650-1300mm f 8-16 Manual Focus

User Manual for Bower 650-1300mm f 8-16 Manual Focus Lens for Pentax

• Product category: SLR Lenses Bower
• Brand: Bower
• 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 Bower SLR Lenses

Product description

• Bower 650-1300mm f/8-16 Manual Focus T-Mount Lens This extreme 650-1300mm f/8-16 Manual Focus Lens from Bower is an economical way to achieve some ultra-telephoto photography, all the way up to 1300mm.  This is a T-mount lens, which means that aperture is not communicated to or controlled by the camera body, and as such must be used only in aperture-priority auto-exposure mode (if your camera has it) or in the manual exposure mode.  There are T-mounts available for every modern DSLR system as well as for older film cameras and even C-mount cameras. It will work on both "full frame" digital cameras as well as the smaller-format APS-C (15 x 22mm) cameras, but has only one effective aperture at any focal length, which varies from f/8 at 650mm to f/16 at 1300mm.  That's not much of a hindrance, however, as you'd likely use this lens at its relatively small maximum aperture in any case. This lens requires bright light and a high ISO setting on the camera to get a fast shutter speed (or fast film in a film camera), and needs a sturdy tripod or monopod, but can deliver very sharp results if used properly.
  • The lens features an incredible zoom range.
  • This lens has a two-touch zoom/focusing system. There is a push-pull ring for zooming, and another ring for focusing.
  • Multi-coated elements reduce flare and increase light transmission.
  • The white lens barrel helps reduce heat buildup.
  • The aperture is fixed-position, but only varies based on focal length.
  • It has a deep lens shade with matted, dark internal coloring.
  • The lens has a tripod mount upon its lens barrel.
  UPC: 636980500379
• Bower T-Mount to Pentax K Mount Adapter The Bower T-Mount to Pentax K Mount Adapter allows you to mount T-mount lenses, telescopes, microscopes, and other optics to your Pentax K-mount camera body. When in use, automatic camera functions, such as autofocus and exposure control, will not be available and must be set manually. UPC: 636980702759

• T-Mount to Pentax K Mount Adapter

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Technical parameters

• Bower 650-1300mm f/8-16 Manual Focus T-Mount Lens

  Focal Length	650 to 1300mm
  Maximum Aperture	f/8
  Minimum Aperture	f/16
  Lens Mount	T-Mount
  Format Compatibility	Full-Frame
  Angle of View	3.8 Rating 82% users recommend this product to others. And what about you? This product has already been rated by 99 owners. Add your rating and experience with the product. Discussion Ask our technicians if you have a problem with your settings, or if anything is unclear in the user manual you have downloaded. You can make use of our moderated discussion. The discussion is public and helps other users of our website who may be encountering similar problems. The discussion is empty - enter the first post Post a new topic / query / comment: Items marked with * are required. Your name *: E-mail : Subject *: Message *: Your email address will not be displayed. Do not forget to fill it in if you want to receive a reply to your enquiry/contribution. Processing of personal data in accordance with GDPR