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Sony SEL20TC - converter

$639.99
Mfg # SEL20TC CDW # 8318123 | UNSPSC 45121603

Quick tech specs

  • Converter
  • for Cinema Line; a VLOGCAM; a1; a1 II; a6700; a7 IV; a7C; a7C II; a7CR; a7R V; a7s III; a9 III
  • Sony E-mount
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Extend your range by 2.0x and retain full optical quality and operability, offering outstanding performance for sports of wildlife photography in a compact, lightweight kit. Multiplies focal length by 2.0x with only a 2-stops light loss. Maintain the full image quality and AF performance of the lens, and feature a dust and moisture resistant design for maximum reliability when shooting outdoors.
$639.99
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Sony SEL20TC - converter

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$639.99

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Sony SEL20TC - converter is rated 4.90 out of 5 by 38.
Rated 5 out of 5 by from Best 2x I have used Purchased to use with the 70-200 and results are excellent, there is a slight loss in quality but better than expected when adding more glass to a lens, I am looking forward to testing with the new 100-400 when released. However it is an expensive 2x converter, would I purchase again, absolutely..
Date published: 2017-06-02T00:00:00-04:00
Rated 5 out of 5 by from Sony SEL20TC Sony 2 x Teleconverter Perfect for my 100-400GM lens with no apparent loss of sharpness or detail. Obviously the aperture takes a small hit but with a modern full frame camera with good ISO ability this isn't really a problem in decent light.
Date published: 2023-12-30T00:00:00-05:00
Rated 5 out of 5 by from Evcellent pictures Bought to use with my Sony 300mm f2.8 gm lens .Image quality is superb This allows me to get closer views for my nature and wildlife photography.
Date published: 2024-07-29T00:00:00-04:00
Rated 5 out of 5 by from Great addition to the SEL100400GM Since 6 months now, I am using this teleconverter with the G Master FE 100-400mm super-telephoto zoom lens (SEL100400GM), mostly for wildlife photography. Converting that lens to 200-800mm range, it allows me to get close-up shots of small birds and animals that are quite far away. I am absolutely happy with the image quality even in this combination (usually using it at 800mm), and with modern cameras like the A7 series, allowing high ISO setting with little loss of quality, the small aperture is no problem for the speed. Thanks to the image stabilisation and light weight I can even use it without a tripod, and routinely do that.
Date published: 2018-10-26T00:00:00-04:00
Rated 5 out of 5 by from One lens inti two Superb build and quality. Little loss of quality when used with my Sony 70-200 2.8 GM MK II
Date published: 2023-12-31T00:00:00-05:00
Rated 5 out of 5 by from Lovely & compact but a bit soft The 2X noticeably softens the fantastic performance of the 300 mm f/2.8, but I find that using Topaz's Sharpen AI renders the images satisfying. I assembled a 12-image, 300 Megapixel 600 mm with this teleconverter and the 300 mm, and it is very impressive. However, using just the 300 mm to cover the same area is really sharp and doesn't require AI sharpening.
Date published: 2025-02-19T00:00:00-05:00
Rated 5 out of 5 by from Close up from far away Adding 2x to my 200-600 telephoto lens makes all the difference. Don't know why it's not included. Wish it worked on my other lens.
Date published: 2024-01-02T00:00:00-05:00
Rated 5 out of 5 by from Great combination with 100-400 lens I mainly use this with my 100-400 lens - an excellent combination for distance, wildlife & detail photography.
Date published: 2018-04-20T00:00:00-04:00
Rated 5 out of 5 by from Optical quality is top notch! I had a lot of reservations on getting this 2x teleconverter as I have seen a lot of reports of significant optical quality loss and blurry images on the 100-400gm. I ordered it anyways to test for myself, knowing that I could just return it if the quality was not up to par. The 2x TC turns the 100-400mm to a 200-800mm. In APS-C crop mode on a full-frame Sony you get a 300mm-1200mm lens! Most of these shots I've included are at the far end of that range and excellent quality. I think the reports specific to the moon being blurry with the 2x TC relates to the fact that punched in to that extreme length there are a lot more variables at play. For one you need a really stable tripod and should manually focus on the moon to ensure it is crispy sharp. The rest of the photos i've included were using autofocus on a Sony a7c or a Sony a7s iii.
Date published: 2024-10-05T00:00:00-04:00
Rated 5 out of 5 by from Excellent, so easy to use and so portable. Image quality is still excellent even with this 2x teleconverter. The main drawback in using this is the effective aperture reduces by 2 stops and although this is well publicised, one of the effects of this is that focussing tends to be slower using the teleconverter compared with the main lens only.
Date published: 2023-08-20T00:00:00-04:00
Rated 5 out of 5 by from "MUST HAVE CONVERTOR!!!!!" I used Sony's 2X convertor with with Sony's 200mm-600mm FANTASTIC lens attached to Sony's A6500 on a tripod. Set @ 600mm focal length. EQIV= 1,800 focal length, F13. "AZALEA" Distance from flower to camera sensor 22 feet.(estimate)
Date published: 2020-06-07T00:00:00-04:00
Rated 5 out of 5 by from Excellent Teleconverter Lens Useful with my telephoto lens to bring wildlife subjects even nearer
Date published: 2021-10-13T00:00:00-04:00
Rated 5 out of 5 by from This does what it is supposed to do right I cannot tell how much reduction on the quality of the images by using this teleconverter. From my eyes, it does what it is supposed to do. It goes nice with FE24-70F2.8GM2.
Date published: 2023-11-05T00:00:00-04:00
Rated 5 out of 5 by from Powerful and lightweight I bought this to use with my A1 and 100-400 zoom and it works perfectly - I’m impressed!
Date published: 2023-02-14T00:00:00-05:00
Rated 5 out of 5 by from Good - even for handheld shooting First impresion very good. Too early to give more deeper analysis
Date published: 2017-02-11T00:00:00-05:00
Rated 5 out of 5 by from Fantastic Kit Bought this for with my 70 to 200mm G Master - works a tear.
Date published: 2019-04-21T00:00:00-04:00
Rated 5 out of 5 by from Great product Excellent product,I’m using it with my 300 2.8 and 600 f4
Date published: 2024-03-24T00:00:00-04:00
Rated 5 out of 5 by from Good - given caveats Okay, here's the thing, I got this because I was a little frustrated that the 70 - 200 mm zoom only goes to 200. I've never used a converter before. Maybe I'm naive, but what I didn't realize is that F2.8, one of the huge selling points of the zoom lens, is no longer possible. Instead F5.6, I believe, is the fastest the lens + converter will go. This is very bittersweet, especially given the price of the converter. If this fact had be publicized in any fashion, I may not have purchased the converter -- but I can't find it anywhere in Sony's specs. That said, optically it's very solid & takes great images. Just don't don't expect a super shallow depth of field or the ability to shoot sports in lower lighting conditions without compromise.
Date published: 2018-08-29T00:00:00-04:00
Rated 5 out of 5 by from Works and looks great This is a great upgrade to my kit I love using it and my photos show it
Date published: 2024-08-14T00:00:00-04:00
Rated 5 out of 5 by from Great for video reach Great for Video reach of course but for photos on the A7R4? Just crop-in as the image looks basically identical.
Date published: 2020-10-05T00:00:00-04:00
Rated 5 out of 5 by from One lens inti two Superb build and quality. Little loss of quality when used with my Sony 70-200 2.8 GM MK II
Date published: 2023-12-31T00:00:00-05:00
Rated 5 out of 5 by from Excellent, so easy to use and so portable. Image quality is still excellent even with this 2x teleconverter. The main drawback in using this is the effective aperture reduces by 2 stops and although this is well publicised, one of the effects of this is that focussing tends to be slower using the teleconverter compared with the main lens only.
Date published: 2023-08-20T00:00:00-04:00
Rated 5 out of 5 by from Great product Excellent product,I’m using it with my 300 2.8 and 600 f4
Date published: 2024-03-24T00:00:00-04:00
Rated 5 out of 5 by from Handy and Powerful Comes with a nice carrying case, this teleconverter lens brings you closer to the subject elegantly. The captioned photograph was taken by 70-200 GM II and out of my surprise, the focusing is still very swift and accurate. Would definitely recommend this little gem.
Date published: 2023-03-23T00:00:00-04:00
Rated 5 out of 5 by from Better than I expected This is perfect for my Sony 100-400 mm lens and a7Riii. Should have bought this one instead of my 1.4 teleconverter last year. Big Manfrotto tripod with gear head makes it easy to take photos of ships in the harbor, 3 miles away, 800 mm.
Date published: 2020-04-25T00:00:00-04:00
Rated 5 out of 5 by from TC20, is it worth it? Bought to pair with the 300 f2.8 and it works very well. Very happy with the results. Will experiment on my 70-200 f4 as that also works well with the TC14.
Date published: 2025-04-06T00:00:00-04:00
Rated 5 out of 5 by from so easy to use I wondered if this would have a big adverse impact on the quality of images that i get from my 100-400 gm lens. Clearly you do lose a lot of light, but the autofocus is still excellent and the the 800 mm reach that this can give me is fantastic for wildlife photography. It is very easy to insert between the camera and lens and hardly adds to the weight at all. Very please
Date published: 2020-07-27T00:00:00-04:00
Rated 5 out of 5 by from This does what it is supposed to do right I cannot tell how much reduction on the quality of the images by using this teleconverter. From my eyes, it does what it is supposed to do. It goes nice with FE24-70F2.8GM2.
Date published: 2023-11-05T00:00:00-04:00
Rated 5 out of 5 by from One lens inti two Superb build and quality. Little loss of quality when used with my Sony 70-200 2.8 GM MK II
Date published: 2023-12-31T00:00:00-05:00
Rated 5 out of 5 by from does not affect the quickness of focus if you need that extra length for wildlife then this is the teleconverter for you amazing quality used with the 200mm x 600mm sony lens
Date published: 2019-12-24T00:00:00-05:00
Rated 5 out of 5 by from "MUST HAVE CONVERTOR!!!!!" I used Sony's 2X convertor with with Sony's 200mm-600mm FANTASTIC lens attached to Sony's A6500 on a tripod. Set @ 600mm focal length. EQIV= 1,800 focal length, F13. "AZALEA" Distance from flower to camera sensor 22 feet.(estimate)
Date published: 2020-06-07T00:00:00-04:00
Rated 5 out of 5 by from Well worth the additional investment This review has a limited readership. I assume readers are either FE 70-200 F2.8 owners who will add this 2x specially designed converter or readers who are going to buy both the lens and the converter. I bought my 70/200 f2.8 a few months ago ,having previously used the 70/200 f4 with excellent results over the last couple of years. I thought long and hard about the change as the f4 not only delivered good results ,was a G lens but was light for travel. In any event I was blown away by the image quality of the 2.8 and decided to get the 2x converter. It cost me an additional 25% over the 2.8 RSP but I believe it is money very well spent and would advise 2.8 users to make the purchase. On the downside it does bring the aperture up from 2.8 to 5.6. I have read of slow focussing but didnt have this problem personally. Long lenses are more prone to "hunting "and manual focus or pre focus gets over this.also you can rachet up the ISO to ensure good shutter speeds. On the plus side there is lots to say! The focussing is excellent amd manual focus is helped by the magnification feature on my alpha 7r Mk 2. It is a wonderful and very light addition to the 70/200.f2.8 making it a 140/400 f5.6 It brings great fun back into my photography. It is beautifully constructed and comes in its own semi rigid case. I used a monopod to ensure stability but have also got good results with it hand held. From a kit point of view I am using 3 zooms ( Sony Zeiss FE 16/35 F4, Sony FE 24/70F2.8 GM ,Sony FE 70/200 f2.8 GM( plus 2x) and Sony Zeiss FE 55'f1.8 Prime lens. Also a Sony flash. Although it is heavier than my previous travel kit it is much better. I carry an RX100 mk 5 as well in case my shoulder gets tired! So my recomendation is that is is well worth the additional approx spend of 25% over the lens cost to get the 2 x converter. I will have a lot of fun with mine and I reckon so will you.
Date published: 2016-12-27T00:00:00-05:00
Rated 5 out of 5 by from A good purchase I have not had this converter long. It is however proving to have been an excellent purchase. used with my FE 70-200 it really does the business and gets the shots that wold otherwise have been impracticable.
Date published: 2020-04-10T00:00:00-04:00
Rated 5 out of 5 by from Optical quality is top notch! I had a lot of reservations on getting this 2x teleconverter as I have seen a lot of reports of significant optical quality loss and blurry images on the 100-400gm. I ordered it anyways to test for myself, knowing that I could just return it if the quality was not up to par. The 2x TC turns the 100-400mm to a 200-800mm. In APS-C crop mode on a full-frame Sony you get a 300mm-1200mm lens! Most of these shots I've included are at the far end of that range and excellent quality. I think the reports specific to the moon being blurry with the 2x TC relates to the fact that punched in to that extreme length there are a lot more variables at play. For one you need a really stable tripod and should manually focus on the moon to ensure it is crispy sharp. The rest of the photos i've included were using autofocus on a Sony a7c or a Sony a7s iii.
Date published: 2024-10-05T00:00:00-04:00
Rated 5 out of 5 by from Great to try This 2x works perfect, I used it almost every time from my near trip
Date published: 2025-02-05T00:00:00-05:00
Rated 5 out of 5 by from SHARP AND COMPACT REACHING THE ZENITH OF OPTICAL EXCELLENCE WITHIN A COMPACT DESIGN
Date published: 2023-02-24T00:00:00-05:00
Rated 5 out of 5 by from Very useful and high-quality This is a fantastic and high-quality bit of kit. I have it paired with a Sony 200-600mm f/5.6-6.3 on a Sony A7iv and am very satisfied.
Date published: 2025-05-11T00:00:00-04:00
Rated 5 out of 5 by from works great with both my A7 mark 4 and my A6700 ca This converter works great with my 70-200mm F4 macro mark 11 lens!
Date published: 2025-10-20T00:00:00-04:00

This page was printed on 12/8/2025 2:01:55 PM.