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Bower SLY500PK 500mm f/8 Manual Focus Pentax Screw Mount Telephoto Lens

BH #BO5008PKPSU (B&H Kit)
Bower
Bower SLY500PK 500mm f/8 Manual Focus Pentax Screw Mount Telephoto Lens
Key Features
  • Preset (Stop-Down) Aperture
  • Requires Pentax Screw Mount
The Bower 500mm f/8 Manual Focus Lens is a classic refractor-style T-mount lens, with an aperture diaphragm in the middle of the lens body to stop down the aperture when necessary.  However, it is assumed that much of the shooting with such a lens will be at its maximum f/8.0 aperture, with a tripod, monopod, or other such support.

This super telephoto works on both "full frame" cameras as well as the "APS-C" style digital SLR cameras. The aperture is not communicated to the camera body. As such, you can use the lens in "M" manual exposure mode or "A" aperture-priority mode only.

This lens' sophisticated achromatic refractor design yields images with pleasing peak contrast and well controlled flare.  It can be used at maximum aperture on a very bright day for some images of moving subjects.

This lens can also be used as a handheld telescope by adding Lumicon's LA1070 adapter along with a 1.25" 45°/60°/90° diagonal and any 1.25" eyepiece, or for astrophotography by using on an SLR mounted to a Vixen GP2 Photo Guider or other motorized equatorial telescope mount.

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Bower 500mm f/8.0 Overview

The Bower 500mm f/8 Manual Focus Lens is a classic refractor-style T-mount lens, with an aperture diaphragm in the middle of the lens body to stop down the aperture when necessary.  However, it is assumed that much of the shooting with such a lens will be at its maximum f/8.0 aperture, with a tripod, monopod, or other such support.

This super telephoto works on both "full frame" cameras as well as the "APS-C" style digital SLR cameras. The aperture is not communicated to the camera body. As such, you can use the lens in "M" manual exposure mode or "A" aperture-priority mode only.

This lens' sophisticated achromatic refractor design yields images with pleasing peak contrast and well controlled flare.  It can be used at maximum aperture on a very bright day for some images of moving subjects.

This lens can also be used as a handheld telescope by adding Lumicon's LA1070 adapter along with a 1.25" 45°/60°/90° diagonal and any 1.25" eyepiece, or for astrophotography by using on an SLR mounted to a Vixen GP2 Photo Guider or other motorized equatorial telescope mount.

Bower 500mm f/8 Manual Focus Telephoto T-Mount Lens

The 500mm f/8 Manual Focus Telephoto T-Mount Lens from Bower is a refractor-style telephoto lens that is compatible with both full-frame and APS-C cameras. T-mount adapters are available to fit all DLSR camera systems to easily adapt this telephoto lens to virtually any camera body. This manual focus lens features an aperture diaphragm in the middle of the lens body that may be stopped down manually when needed, it is not actuated by the camera body, and no lens exposure data is communicated to the camera.

Featuring a sophisticated achromatic refractor design, this lens yields images with pleasing peak contrast and well controlled flare. This super-telephoto lens has an integrated tripod ring, and use of a tripod or monopod is suggested for optimal image sharpness. This lens may be converted to a handheld telescope using a Lumicon LA1070 adapter along with a 1.25"-45°, 60°, or 90° diagonal and any 1.25" eyepiece or for astrophotography by using on an SLR mounted on motorized equatorial telescope mount.

  • Achromatic refractor 500mm f/8.0 lens with T-mount
  • Multicoated optics
  • Knurled manual focus ring
  • 67mm front filter ring
  • Tripod collar
UPC: 636980500430

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

Bower 500mm f/8 Manual Focus Telephoto T-Mount Lens Specs

Focal Length500mm
Maximum Aperturef/8
Minimum Aperturef/32
Lens MountT-Mount
Lens Format CoverageFull-Frame
Angle of View
Minimum Focus Distance33' / 10 m
Optical Design4 Elements in 4 Groups
Focus TypeManual Focus
Image StabilizationNo
Tripod CollarYes
Filter Size67 mm (Front)
Dimensions (ø x L)2.76 x 11.73" / 7.01 x 29.79 cm
Weight1.41 lb / 640 g
Packaging Info
Package Weight1.85 lb
Box Dimensions (LxWxH)14.65 x 3.55 x 3.45"

Bower T-Mount to Pentax K Mount Adapter Specs

Adapter
Camera MountPentax K
Lens MountT-Mount
Packaging Info
Package Weight0.095 lb
Box Dimensions (LxWxH)2.85 x 2.8 x 1"

Bower 500mm f/8.0 Reviews

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