Opteka 500mm f/8 HD Telephoto Mirror Lens for T Mount

Opteka 500mm f/8 HD Telephoto Mirror Lens for T Mount

Opteka 500mm f/8 HD Telephoto Mirror Lens for T Mount

B&H # OPT500M MFR # OPT500M
Expected availability: End of Oct 2018

Product Highlights

  • T-Mount Lens/Full-Frame Format
  • Fixed f/8 Aperture
  • Catadioptric Telephoto Lens
  • Multi-Coated Optics
  • Manual Focus Design
  • Accepts 72mm Front & 30.5mm Rear Filters
  • Includes ND-2X, ND-4X, Skylight Filters
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Opteka 500mm f/8.0 overview

  • 1Description

Compact, yet long-reaching, the 500mm f/8 HD Telephoto Mirror Lens from Opteka is a reflex lens featuring a threaded T-mount for adapting to a wide variety of camera types. The Cassegrain design enables it to achieve a 500mm focal length within a compact and lightweight form factor that is significantly smaller than a traditional 500mm lens. Its optical design is also fully multi-coated to suppress lens flare, ghosting, and surface reflections for increased contrast and color neutrality when working in strong lighting conditions. Manual focus control is possible down to 5.5' with a 1:2.7 maximum magnification ratio for working with close-up subjects, and the lens accepts both 72mm front and 30.5mm rear threaded filters. 30.5mm ND-2X, 30.5mm ND-4X, and 30.5mm skylight filters are included along with a lens pouch for travel or storage.

This reflex lens is compatible with full-frame and smaller-sized sensors and features a threaded T-mount, which is compatible with a variety of optional adapters for mounting to various camera mounts.
Catadioptric system with Cassegrain design helps to reduce the overall size and weight of the lens while still providing a super telephoto 500mm focal length.
Multi-coated optics help to reduce lens flare and ghosting for increased contrast and color fidelity.
Manual focus design offers a minimum focusing distance of 5.5' with a maximum magnification of 1:2.7 for close-up shooting.
Both a front 72mm filter thread and a rear 30.5mm filter thread are available, and this lens includes 30.5mm ND-2X, 30.5mm ND-4X, and 30.5mm skylight filters.
UPC: 813789013778
In the Box
Opteka 500mm f/8 HD Telephoto Mirror Lens for T Mount
  • Front and Rear Lens Caps
  • 30.5mm ND-2X Filter
  • 30.5mm ND-4X Filter
  • 30.5mm Skylight Filter
  • Lens Pouch
  • Limited 10-Year Warranty
  • Table of Contents
    • 1Description

    Opteka 500mm f/8.0 specs

    Focal Length 500mm
    Aperture Maximum: f/8
    Camera Mount Type T-Mount (T-Thread)
    Format Compatibility 35mm Film / Full-Frame Digital Sensor
    Minimum Focus Distance 5.5' / 1.68 m
    Maximum Reproduction Ratio 1:2.7
    Optical Design 9 Elements in 8 Groups
    Autofocus No
    Filter Thread Front: 72 mm
    Rear: 30.5 mm
    Dimensions (DxL) 3 x 3.4" / 76.20 x 86.36 mm
    Weight 12.70 oz / 360 g
    Packaging Info
    Package Weight 1.15 lb
    Box Dimensions (LxWxH) 6.4 x 4.0 x 3.9"

    Opteka 500mm f/8.0 reviews

    500mm f/8 HD Telephoto Mirror Lens for T Mount is rated 4.0 out of 5 by 9.
    Rated 5 out of 5 by from Perfect Lens I� love this lens. It gets me shots I wouldn't get otherwise.� I also have the original Russian version of the lens which must be forty years old.� This is actually a small Maksutov telescope and you can attach an eyepiece and use it as a telescope.� Got the Opteka for the modern coatings.� This lens is manual so you will have to go outside your comfort zone to use it but that's how you get results in the real world. When I shoot a bird on the wing I notice where the birds are flying and then focus on a sign or post that is about the same distance.� Every serious photographer should have one of these.� They are perfect when you have a light subject in direct sunlight - such as the beach or a snow scene or a sunset.
    Date published: 2017-11-20
    Rated 5 out of 5 by from A surpisingly precise optical instrument It is priced like a toy lens but can really deliver. I purchased it to document the total solar eclipse of August 21, 2017. Here is the result https://www.youtube.com/watch?v=OVnCl5GRtY0 The lens was attached to an Olympus OM-D EM5, a mirrorless camera with a crop factor of 2X that doubled the focal length of the Opteka lens to a whopping 1000 millimeters (one meter). The definition, the color saturation and color separation are more than surprising for a lens costing a mere $95. The multicolored reflections that can be seen for a few seconds when the unfiltered solar light hits the front mirror are probably due to an insufficient internal baffling. This is the only apparent imperfection in a well engineered optical object. Bear in mind that the lens might be priced like a toy but it isn't easy to use as a toy would be. Precise focus can be attained only if the camera sits on a sturdy tripod. Contrast is by definition lower than that of a corresponding (and much bulkier) lens of refracting (traditional) type, The aperture is fixed at f/8 and the camera has to be used in manual mode. But the results can be quite remarkable.
    Date published: 2017-08-24
    Rated 5 out of 5 by from excellent lens I have had many lenses of this type, from Korea, Russia and so forth, Initially, the performance has been good, but later the performance has so to speak tailed off. At first, I suspected sabotage, but, of late, I think that the large amount of lead in the optical glass is migrating to the silver surface of the mirrors, causing the premature deterioration of the lens performance. Could this be? At $95, even if this lens only lasts 6 months, this is a bargain. Maybe one could exchange it for a new lens after 6 months and pay a fee, much like a rental fee. Paul D Miles, Jr US Army retired
    Date published: 2018-06-07
    Rated 5 out of 5 by from 500 mm at this price is a good buy. lens does what it's supposed to do. I got good pictures of the eclipsse. was able to make a nice 8 x 35 inch print of the start to finish of the eclipse. Cost friendly 500 mm to play around with before spending a few thousand on a non mirror lens of that focal length.
    Date published: 2017-08-31
    Rated 3 out of 5 by from Mirror lens characteristic I have not tried the Opteka Telephoto mirror lens, but I have a Phoenix Mirrror Lens f/8 which looks the same outside. That lens showed a light over the whole picture, reducing the picture contrast. Suspecting light from a wide angle coming through, I attached a long (8 inch) dark sleeve as a shield. This eliminated the white wash, bringing the contrast up.
    Date published: 2017-03-02
    Rated 3 out of 5 by from For now, and subject to change, I'm disappointed. Shipped promptly; received in a timely manner. But I probably should have purchased much further before the 8/21 Solar Eclipse, to have had more time to experiment. Perhaps I'll be able to update this later, but, for now: As others have noted, this can be extremely difficult to focus unless mounted on a rigid base or tripod. Handheld focusing has been -- to date and for me -- unusable, as what looks fairly decent on the live view looks very soft in the file. And frankly, on difficult subjects such as distant signs, leaves moved by a gentle breeze, or the sun (still to be tried: the moon and other astro subjects), even on a very solid mount, finding focus is beyond simply difficult. Perhaps I got one of those where QC failed -- an event noted by others and counterbalanced by reviews which say with sufficient care and a sturdy mount, excellent focus has been achieved. But don't put excessive stock in this report, other than my confirmation of the notion that focusing, hand-held is a job for a tripod (or maybe teenaged, super-steady hands).
    Date published: 2017-08-30
    Rated 5 out of 5 by from Not bad at all I was curious about mirror lenses for some time. Recently, I got to actually handle an older, much bulkier version purchased used by a friend. I was impressed and purchased this newer model. The lens is smaller and lighter than my L series 24-105 walking around lens. This lightness will lead one to think that it will be no problem to hand hold while shooting, but be warned: 500mm magnifies every shake and wobble and it is easy to throw off your focus due to the shallow depth of field. While I have gotten some good, hand held shots, you really need a tripod. The focus ring is a bit stiff, but needs to be as the slightest amount of travel can mean the difference between in focus and out of focus. A lens hood is a must and a polarizing filter works wonders when shooting in bright sunlight. Not bad at all for a lens this price.
    Date published: 2017-08-21
    Rated 4 out of 5 by from Pretty good Quite tricky to use because the depth of field is so shallow, but the results are pretty good. I am amazed at the detail up to ten or twelve miles away using it on a Sony A7 II.
    Date published: 2018-02-12
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