Home » Pentax » Opteka 500mm f/6.3 Telephoto Mirror Lens for Pentax K-3, K-500, K-50, K-5 II, K-5 IIs and 645D Digital SLR Cameras


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Opteka 500mm f/6.3 Telephoto Mirror Lens for Pentax K-3, K-500, K-50, K-5 II, K-5 IIs and 645D Digital SLR Cameras


Opteka 500mm f/6.3 Telephoto Mirror Lens for Pentax K-3, K-500, K-50, K-5 II, K-5 IIs and 645D Digital SLR Cameras


The Opteka mirror lens is incredibly compact and lightweight. Using an advanced reflex design, this is a mirror lens that is ideally suited for wildlife and sports photography. It has a fixed aperture of f6.3. Opteka mirror lenses incorporates advanced computer designed optics and the latest in multi-coating techniques. The process of multi-coating assures virtually flare free photographs even under adverse lighting conditions resulting in crisp high contrast pictures with full color fidelity.

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. 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 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.

Specifications
Filter Size: 95mm, 34mm rear
f/Stop Range: f/6.3 (fixed)
Minimum Focus Distance: 6.6′ (2.0 m)
Angle of View: 4.1Deg x 2.7Deg (WxH)
Groups/Elements: 6/7
Length: 4.7″ (120mm)
Maximum Diameter: 3.9″ (98mm)
Weight: 1.55 lbs (705g)

Included Items
~ Opteka 500mm f/6.3 Telephoto Mirror Lens
~ T-Mount Lens Adapter
~ Lens Cap
~ 10y Warranty

  • High definition multi-coated optics produce sharper, more intense pictures
  • Incredibly compact and lightweight
  • 7 elements in 6 groups
  • Angle of view: 4.1Deg x 2.7Deg; Min Focusing Distance: 6.6′ (2.0 m)
  • May be combined with the Opteka 2X Multiplier for 1000mm Zoom (Sold separately – 47st Photo Item Code: B000JSZ41S)

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What customers say about Opteka 500mm f/6.3 Telephoto Mirror Lens for Pentax K-3, K-500, K-50, K-5 II, K-5 IIs and 645D Digital SLR Cameras?

  1. 4.0 out of 5 stars
    I like it, cheap TELE for surt shots, September 2, 2014
    By 
    Glenn A. Martinez “Glenn Martinez Olomana Gar… (Waimanalo, HI United States) –

    Verified Purchase(What’s this?)
    This review is from: Opteka 500mm f/6.3 Telephoto Mirror Lens for Pentax K-3, K-500, K-50, K-5 II, K-5 IIs and 645D Digital SLR Cameras (Electronics)
    I like it, cheap TELE for surt shots, but fixed 6.3 sucks, not good in morning or evening shots. Use a tripod or leave it at home!
    Doing frog in pond shots and having a hard time in low light. Tried hand holding at sports event, no go. Tripod, fine. Sure wish it had auto focus!

    0

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