Overview
Compare
Specs
Protection

Reviews about this item

Review Summary

2019-01-29T15:34:54

Rated 5 out of 5

camera for astronomy

I still favorite pentax most use for astronomy .

Bart B.

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest in Pre-Owned Gear & Peace of Mind!

Extend coverage on pre-owned products after the retailer warranty ends and protect photo & video gear from accidental damage with Adorama Protect.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Extended Protection

Coverage for pre-owned gear begins after the retailer warranty ends, plus accidental damage protection for photo/video gear that starts on day one.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Malfunction Protection

Malfunction Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for International and U.S. territories purchases. Plans on pre-owned items do not cover pre-existing damages.

Bower 500mm F/6.3 Specifications

  • Filter Size

    95mm front, 34mm rear

  • f/Stop Range

    f/6.3 (fixed)

  • Minimum Focus Distance

    6.6' (2.0 m)

  • Angle of View

    4.1½ x 2.7½ (W x H)
    2.6½ x 1.7½ (W x H) w/ APS-C (15 x 22mm) cameras

  • Groups/Elements

    6/7

  • Length

    4.7" (120mm)

  • Maximum Diameter

    3.9" (98mm)

  • Weight

    1.55 lbs (705g)

About Bower T-Mount 500mm f/6.3 Mirror, Manual Focus Lens for Nikon F mount



Bower T-Mount 500mm f/6.3 Mirror Lens with Case, Requires T-Mount
The Bower T-Mount 500mm f/6.3 Mirror Lens with Case is a catadioptric mirror T-mount lens. When combined with the T-mount to fit your camera system, this mirror lens mounts to camera and works on both "35mm/Full Frame Sensors" as well as the "APS-C" style digital SLR cameras. T-Mounts are available for all the digital SLR systems, as well as for C-mount systems. However, in every case the fixed f/6.3 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 telephoto lens has a broad diameter and stocky build, making it easier to handle than a normal refractor lens. A White lens barrel helps prevent heat retention. It also has a much different rendering of out of focus areas than a normal lens, where highlights will be doughnut-shaped rings with more saturation and contrast on the edge of the ring than on the center. This T-Mount 500mm mirror lens is offered with free shipping, in new condition only!

Product Highlights

  • Fixed-aperture 500mm f/6.3 mirror lens in T-mount
  • Multicoated optics
  • Distinct out-of-focus highlight characterization
  • White lens barrel helps prevent heat retention
  • Accepts inexpensive 34mm filters upon the rear of the lens
  • Ideal for astrophotography use when mounted to a motorized equatorial telescope mount

From the Manufacturer

The Bower 500mm f/6.3 Manual Focus Lens is a catadioptric mirror T-mount lens. When combined with the T-mount to fit your camera system, this mirror lens mounts to camera and works on both "full frame" cameras as well as the "APS-C" style digital SLR cameras. However, in every case the fixed f/6.3 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 has a broad diameter and stocky build, making it a bit easier to handle than a normal refractor lens. It also has a much different rendering of out of focus areas than a normal lens; highlights will be doughnut-shaped rings with more saturation and contrast on the edge of the ring than on the center.

Bower T-Mount 500mm f/6.3 Mirror, Manual Focus Lens for Nikon F mount Features

  • Fixed-aperture 500mm f/6.3 mirror lens in T-mount
  • Multicoated optics
  • Distinct out-of-focus highlight characterization
  • White lens barrel helps prevent heat retention
  • Accepts inexpensive 34mm filters (upon the rear of the lens)