Tamron 2x SP AF Pro Teleconverter for Canon EOS

Tamron 2x SP AF Pro Teleconverter for Canon EOS

Tamron 2x SP AF Pro Teleconverter for Canon EOS


Product Highlights

  • Compatible With EF Lens Mount Only

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Tamron AF20PC-700 overview

  • 1Description

The Tamron SP AF Pro teleconverter features improved optical construction, and is designed to be used with lenses that are f/2.8 and of focal lengths of 90mm or greater.

The 2x teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 2x, and will cut back the amount of light by 2 f/stops. For example, using a 2x teleconverter with a 300mm lens will effectively increase the focal length to 600mm. A lens set to f/2.8 will now be f/5.6.

This teleconverter is not recommended for lenses wider than 90mm, e.g. 50mm, 28-105mm, etc. However, full AF operation is still only possible with lenses with open aperture of f/2.8 or brighter. Please be aware that AF will work properly only if there is enough light and contrast on the subject to activate the camera's AF sensors. Manual focusing is recommended when using lenses with smaller open f-stop value than those given above. This teleconverter is compatible with the EF lens mount only--not compatible with EF-S lenses.

Note: When used with lenses with smaller maximum apertures (f/4 and f/5.6, for example), there will be little difference in image quality as compared with the standard Tamron teleconverters. When used with lenses wider than 90mm, the SP teleconverters can actually compromise image quality.

Pro-series teleconverters are specifically designed and optimized for use with ultra-telephoto lenses (above 200mm) to deliver maximum resolution, contrast and color rendition without degrading any aspect of the master lens performance.
Improved optical design of 4-group/5-element for 1.4x and 4-group/7-element for 2x. Relative illumination is significantly improved resulting in better overall contrast and resolution across the entire image field.
Multi-coated elements result in crisper images.
UPC: 725211207115
In the Box
Tamron 2x SP AF Pro Teleconverter for Canon EOS
  • Front & Rear Caps
  • Pouch
  • 1-Year Warranty
  • Table of Contents
    • 1Description

    Tamron AF20PC-700 specs

    Mount Canon EF
    Magnification 2x
    Optical Design 7 Elements in 4 Groups
    Length 1.7" / 43.5 mm
    Diameter 2.7" / 68.5 mm
    Weight 6.5 oz / 184.0 g
    Packaging Info
    Package Weight 0.55 lb
    Box Dimensions (LxWxH) 3.5 x 3.1 x 3.1"

    Tamron AF20PC-700 reviews

    2x SP AF Pro Teleconverter for Canon EOS is rated 4.4 out of 5 by 38.
    Rated 5 out of 5 by from Tamron is the best hands down! Tamron seems to be the only lens maker that has a 2X Teleconverter that will work with THEIR 70-300 m.m. lens that will match up with a Canon digital camera. It isn't supposed to work with digital cameras but it DOES! As long as you stick with Manual Focus you will get a 140-600 m.m. zoom capability, apparently the only one on the planet. This will probably work with Nikon also but I'm not positive. When my 800 m.m. becomes a little too heavy and bulky, this combination 140-600 can be a life-saver. I very seldom use auto focus anyway for my work.
    Date published: 2008-07-07
    Rated 5 out of 5 by from Does the Trick! I bought the teleconverter to increase the focal length of my 70-300mm telephoto so I could take pictures of the lunar eclipse a few weeks back. Unfortunately, my area was clouded over, so I never got a chance, but I did take a few shots the nights before. I was very pleased with the results (image below)...nice detail with visible craters, much better than using my 70-300mm on its own. Two cons... 1. It doesn't seem to auto-focus, but this isn't a dealbreaker for me. I tend to use manual focus most of the time anyway. 2. You lose two F-stops.
    Date published: 2014-04-24
    Rated 5 out of 5 by from A great purchase for the money. I wanted to be able to take photos of the alligators and other wild life in the State Park near my home here in Sarasota Florida. I felt that with the telephoto lens that I have; I just was not getting the close-ups that I wanted. Other than getting closer to my subjects which are mostly alligators (Do not recommend getting close to alligators) or buying a super telephoto lens. I decided on the cheaper and safer route and bought this teleconverter. I am very happy with my purchase. I have used it quite a bit and have not been disappointed. I do not have anything negative to say about this product.
    Date published: 2009-07-10
    Rated 5 out of 5 by from Happy with this purchase Using with a Canon 60D and Canon EF 70-300mm lens. Knowing going into it that this combination would not work with auto-focus ... it actually does work at times, but I use it on manual focus and am very happy with the same quality shots that I get without the converter, but now have the ability to get much closer shots of birds and other wildlife. Also, took some great shots of my Leonbergers (dogs) romping in the back of a field.
    Date published: 2012-03-29
    Rated 5 out of 5 by from Alternative to buying lens I own a Tamron 70300mm zoom lens and wanted a longer focal length but can't afford a new lens right now. So I bought the Tamron 2X SP AF Pro converter for my Canon 60D body and it exceeds my exceptions although I had read some reviews that the AF didn't work for some but so far its worked flawlessly for me.. I did lose a couple of F stops but for the price I can't beat it. And for those who can't afford another lens it's a great alternative. I've purchased several times now from B&H and highly recommended them I'll continue to buy from B&H for my photographic needs..
    Date published: 2014-05-24
    Rated 4 out of 5 by from Very good for the price (and what it's meant for). The TamaronSP 2x teleconverter for Canon does what it's supposed to do, double the focal length. It does it quite well, under the correct circumstances (wide aperture lenses in bright light). That being said, it still took relatively good pictures in so-so light, hand held (pushing the iso a bit). Overall, well worth the money. The Canon brand version may do a bit better, but, as it has the same limitations and costs twice as much, I'm happy with it (very happy).
    Date published: 2015-11-21
    Rated 4 out of 5 by from good solid product the tamron 2x converter is good for macro shots or still shots that you need the extra focal length to help frame your subject. Keep in mind that you will lose at least two fstops and a good tripod is neccesary
    Date published: 2008-05-26
    Rated 5 out of 5 by from Excellent teleconverter Excellent teleconverter for Tamron 18-270 DiII. PZ antivibration works very well. AF works as long as there is enough light, but I prefer to focus manually using zoomed live-view on the Canon T3i.
    Date published: 2011-09-05
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