The version III 2x extender cannot be combined with a 1.4x Extender to produce a significant increase in focal length. Just like its little brother, the Canon Extender EF 1.4x III, the front element of the Extender protrudes. Then a 2x teleconverter is the saving grace. Compared Usage Recommendations More. The extender's design ensures there is no loss of lens performance or image quality. They can’t be. The Extender EF 2x III causes a slightly greater loss of quality at full aperture, and, even after a stop stopping down one stop, the sharpness does not reach its maximum values. But of course, you don’t make a 600mm out of your 300mm or an 800mm out of your 400mm with that. If we look at the sharpness, then we see some loss due to the use of the Extenders. Canon 2x EF Extender II vs. III . Price and specs Review (EN): soon It is very solidly built, and it has to be. How come you actually have less vignetting with the Extender at full aperture? Once you have sufficient light and contrast, you can work very well with the Extender.=. {Overview}Canon 2x Extender Focal length extension for super-telephoto lenses The Extender EF 2x III is specially designed to work in conjunction with L-series IS super-telephoto lenses, extending their focal length by a factor of 2x. Ratings Distribution. Another advantage of Extenders is that you can put a 600 mm or 800 mm on your camera without having to have it in your bag. Privacy | Disclaimer |About us | Contact, All text and images  may not be reproduced or reused without permission. Of course, the Extender ha… To ensure the best possible image quality in all shooting conditions, it combines redesigned optics, improved data communication between lens and camera and enhanced environmental protection. This lens is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L. However, you don’t get that extra range for free. The Extender EF 2x III enlarges the image from the lens used, but with that you also enlarge any lens errors. That requires professional build quality. Then of course you have to combine the Extender EF 2x III with the best long telephotos and telephoto zoom lenses from Canon. Sample Images top. Sample Image; Marketed: December 2010: Original Price ... 72.0x 52.7: Weight (g) 325: Designed to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2X III delivers optical performance on par with the finest Canon super telephoto lenses. That’s because, with an Extender and f/5.6, you’re actually working with the 400 mm at full aperture, at f/2.8. It features a built-in microcomputer for seamless communication among camera body, lens and extender, features careful lens placement and coatings to minimize ghosting, flare and chromatic aberration, and even has a new Fluorine coating that keeps soiling, smears, fingerprints to a minimum. Sample Images Intro Specs Performance. This is due to a redesign of the … Both the build quality and the optics must meet the highest requirements, otherwise they will do more harm than good. Canon EF 400mm f/2.8L IS III USM + 2x +Canon EOS 5DsR @ 800mm ISO 1600 f/5.6 1/30s Click on the button below and visit our renewed web gallery with sample images. The Extender connects cameras like the Canon EOS 1DX Mark II with the heaviest telephoto lenses from Canon. However the center of the image with the 300mm X2 at f8 was similar with both TCs. Designed to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2X III delivers optical performance on par with the finest Canon super telephoto lenses. https://www.cyfrowe.pl/aparaty/canon-ef-20x-iii-telekonwerter.html Unless money really doesn’t play a role, you don’t just buy a pair of them. If you want to work with an Extender, it’s important that you use one that is as good as possible. Per Canon: "This lens is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L. Whereas with the 400 mm f/2.8 without the Extender in twilight, we still had fast and accurate focusing, the EOS 5D Mark IV really had to search a bit more for the right focus as soon as we mounted an Extender. On the question of 1.4x vs. 2x, the image quality of my 1.4x is far superior to either the EF 2x or EF 2x III that I tested at comparable focal lengths. This item Canon Extender EF 2x III, White/Black Viltrox DG-C Auto Focus AF TTL Extension Tube Ring 12mm 20mm 36mm Set Metal Mount with Covers Compatible with Canon EF EF-S 35mm Lens DSLR Camera SHOOT AF Auto Focus Macro Extension Tube Set for Canon EOS EF EF-S Lens DSLR Cameras 1100D 700D 650D 600D 550D 500D 450D 400D 350D 300D 100D 70D When used with a compatible lens, they will multiply the focal length of the lens by a factor of either 1.4x or 2x, at the cost of decreasing the lens' aperture by 1 or 2 stops respectively. And if we look at the 400 mm at f/2.8, we see that it has more than 1.8 stops of vignetting. At the same time, an Extender is as good as the lens it is used with. Note: All images taken on a tripod with no filters. Additionally, please see the lens and/or camera body manual for full compatibility information with the Extender EF 2X III. The Extender does not actually contain any moving parts or setting rings, apart from the mount release button. Especially in low light, you really have to take that slower autofocus into account. image.canon image.canon image.canon. The effect is similar to what happens if you try to mount a Canon EF 1.4X extender III or EF 2X extender III on the EF 70-300 mm f/4-5.6 L IS USM. The images can be downloaded in full resolution to be viewed at 100%. With a 400 mm, it’s a bit easier. Extender EF 2x III. Canon EOS 6D + EF 100-400mm f/4.6-5.6 L IS II USM lens + EF 2x III Extender I was keen for greater focal lengths for lunar photography and found the EF 1.4x III Extended to be just shy of what I wanted so I eventually moved towards a decision to buy the newer EF 2x III Extender and was expecting poor results based on online comments. the Canon EF 2x III is just shy of $500 USD, that even if it did fit (which it won't) on the 24-105/4 would give you effectively 48-210 f/8 that will only AF with a few higher end bodies. Canon Model CNN_2x III Extender Lens_CanonDSLR Package Dimensions 14.4 x 10 x 9.6 cm; 440 Grams Item model number CNN_2x III Extender Lens_CanonDSLR Special Features This lens is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L. The small extra inconveniences such as a slightly slower autofocus and a slightly less sharpness at full aperture do not stand in the way of the enormous advantage that you get with the Extender EF 2x III: doubling your focal length. In that respect, we can heartily recommend the Extender EF 2x III. This site receives support when the B&H and other … Image quality comparison of the EF 70-200mm f/2.8L IS II + EF 2x III extender, vs the EF 100-400 f/4.5-5.6L IS II from the-digital-picture.com Some Additional Advice If you place the Extender EF 2x III on a cheap telephoto zoom lens with the usual problems with chromatic aberration, those lens errors will be doubled when you use the Extender. From easy craft ideas to origami-style 3D models – bring the paper fun into … Without the Extender, you have approximately 0.35 stops of vignetting with the 400 mm at f/5.6. Many photographers therefore often choose a 300 mm or 400 mm and purchase one or two Extenders to get extra reach. The most improvement was seen at the fastest f-stop and in corners. The Extender connects cameras like the Canon EOS 1DX Mark II with the heaviest telephoto lenses from Canon. A teleconverter, or extender as Canon calls them, is an ideal way to extend the focal point of telephoto lenses. Extender EF 2x III. Denne extender er ideel til presse-, sports- og naturfotografering, idet den forlænger fokuslængden for Canons tele- eller telezoomobjektiver i L-serien til det dobbelte – med højere nøjagtighed i autofokus og forbedret kommunikation mellem kamera og objektiv. The Canon Extender EF 2x III is an easy and relatively cheap way to double your telephoto range. Good extenders like these are not cheap. The Canon Extender EF 2x III is also quite small and light. This is a 2× teleconverter for Canon's full-frame mirrorless system.. As of August 2020, it is only compatible with the Canon RF 100-500mm L IS, RF 600mm and RF 800mm lenses.. If you look at what you get in return, then an Extender, whether you buy the 1.4x or 2x, or both, is a good deal. That’s because the Extender enlarges the image, so that you only photograph the center. Extender EF 2x III. Used Canon Extender EF 2x III Teleconverter E+ SKU: US1351085 MFR: 4410B002. Extender EF 2X III meets necessary standards in terms of rugged, dustproof and water-resistant construction, and should be in every professional’s camera bag. Full resolution. A Canon EF 70-200 mm f/2.8 L IS III USM thus becomes a 140-400 mm f/5.6. But the Extender EF 2x III is not meant for that either. Can we help you choose your next lens?Our lens selector will take you through our range of lenses and help you find the perfect match for you and your EOS camera. By continuing to use this website, you consent to the use of cookies in accordance with our Cookie Policy. But I wonder if the 280mm you get with a 70-200 + 1.4x will be long enough for your needs. Curious about the performance of the Canon Extender EF 2x III in practice? Good, bright telephoto lenses are pretty much the most expensive lenses that you can buy for your camera. There is not much to say about the build quality of the Canon Extender EF 2x III and nothing negative at all. Just the 70-200 @ 200mm and the Canon Extender Mark III. This is the reason that many photographers choose to purchase both Extenders, or – if you have a budget for one – to buy the 1.4x first. And a modern teleconverter, such as the Canon EF 2x III, takes up little space in your photo bag and, in combination with a bright telephoto lens such as the Canon EF 400 mm f/2.8 III, delivers very beautiful images. Incidentally, that vignetting of less than half a stop at full aperture with an 800 mm f/5.6 is not something we would be concerned about. Our advice would be to close the aperture at least one stop, unless of course you cannot work other than at full aperture due to the light situation. ▸ Canon EF 2x II Extender Sample Pictures As an Amazon Associate, I earn from qualifying purchases. The Extender is fairly large so it adds a good amount of length to the Canon EF 70-200mm L 2.8 IS lens. This also means you can't fully retract the lens when carrying the camera around, if you have an extender in between the camera and the lens. This is a 2× teleconverter for Canon's full-frame mirrorless system.. As of August 2020, it is only compatible with the Canon RF 100-500mm L IS, RF 600mm and RF 800mm lenses.. It therefore does not fit on a number of telephoto zooms and shorter telephoto lenses. You no longer use the corners of the image, where most of the vignetting is. The extender's design ensures there is no loss of lens performance or image … A(z) Canon Extender EF 2x III Ismerd meg jobban a következőt Megnövelt fókusztávolság szuper-teleobjektívek számára Az EF 2-szeres III konvertert kifejezetten az L sorozatú IS szuper-teleobjektívekhez fejlesztették ki, melyek fókusztávolsága így kétszeresére növelhető. 200mm f/8. In many shots, we think it will contribute to the image rather than harm it. You can’t blame the Extender for that. Designed to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2X III delivers optical performance on par with the finest Canon super telephoto lenses. ... fingerprints to a minimum. Designed to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2X III delivers optical performance on par with the finest Canon super telephoto lenses. Creative Park Creative Park Creative Park. The loss with the Canon Extender EF 2x III is minimal. Additionally, please see the lens and/or camera body manual for full compatibility information with the Extender EF 2X III. Additionally, please see the lens and/or camera body manual for full compatibility information with the Extender EF 2X III. Approve the Cookies This website uses cookies to improve your user experience. The Canon EF 2x III Extender mounts between your Canon EOS Digital SLR and a compatible lens (primarily Canon L Series lenses), extending the focal length of the lens by a very noticeable 2x. Seamless transfer of images and movies from your Canon camera to your devices and web services. It becomes even more spectacular with a super telephoto like the EF 400 mm f/2.8 L IS III USM. Canon Extender EF 1.4x II. This lens is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L. That is mainly due to the lens used. Of course, the Extender has a gasket to seal the connection to the camera. Designed to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2X III delivers optical performance on par with the finest Canon super telephoto lenses. So not with a 70-300 mm f/4-5.6 consumer zoom, but with a Canon EF 70-200 mm f/2.8 L IS III USM for example. The Extender does not actually contain any moving parts or setting rings, apart from the mount release button. Compatible with most telephoto and zoom lenses within Canon's flagship professional L-series, the Canon Extender EF 2x III is a great kit addition. Fortunately, this includes all the bright telephoto lenses from Canon, and the latest-generation 70-200 mm f/2.8 L IS USM does well with the Extender EF 2x III. Zvětšuje 2× ohniskovou vzdálenost teleobjektivů se zoomem a teleobjektivů Canon řady L, zvyšuje přesnost automatického zaostřování a zlepšuje komunikaci mezi fotoaparátem a objektivem. A Canon EF 800 mm f/5.6 L IS USM costs almost 30 times as much as the Extender EF 2x III. The most improvement was seen at the fastest f-stop and in corners. The huge focal length increase of course comes with some penalties, including a modest financial cost, some size and weight addition and more impacting, a decrease in image quality and maximum aperture. If you lose too much quality, then you can shoot almost as well without a converter, crop your image and enlarge it again in Photoshop. 4.4. Sample Images: Canon 2X Extender EF III (All images copyright Photography Online, Inc.) Still Life tests, Canon 1Ds Mk III body (full-frame sensor) Lens Only: 200mm f/4. Most of my airshow photos of planes in flight are done at 400, 500 or longer focal lengths. Canon 5D Mark III, Canon EF 400mm f/5.6 L, f/5.6 (wide open) at 1/320 handheld at ISO 100, no lens profile used, Athentech Perfectly Clear v2.) That of course has to do with the loss of two stops of brightness. Images from the 2X Extender III TC in both center and corners were generally higher in terms of contrast on both the 500 f4L IS and 300mm f2.8L IS. That requires professional build quality. Palm, 21 December 2014. ​Click on the product for specifications, prices and test results. The Extender EF 2X III from Canon is designed for select Canon EF mount L-series telephoto lenses.It increases the focal length of a lens by a factor of 2x while still delivering superb image quality. It is very solidly built, and it has to be. With the Extender EF 2x III, you get an impressive 800 mm f/5.6 L. Ideal for nature photography, for example. With the Extender EF 2x III, you double the focal point, but you also lose two stops of light. Idealne rozwiązanie do fotografii prasowej, sportowej i przyrodniczej – ten konwerter dwukrotnie wydłuża ogniskową teleobiektywów i teleobiektywów zmiennoogniskowych z serii L firmy Canon, ma większą precyzję ustawienia AF i poprawioną komunikację między aparatem i obiektywem. If you look at the benefits in practice, the Extender EF 2x III is very inexpensive. In a few extreme cases, the camera indicated that the focus was good, while the shot really wasn’t. The Canon Extender EF lenses are a group of teleconverter lenses made by Canon.These lenses are used between any compatible EF type lens and any of the Canon EOS line of cameras. Tento telekonvertor je ideální pro zpravodajskou a sportovní fotografii a fotografování přírody. For the same money you should instead get the EF 70-300 f/4-5.6 IS II USM, or Tamron 70-300 f/4-5.6 Di VC USD. This lens is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L. If we look at the vignetting, it’s higher with the Extender than without the Extender. Canon 2x EF Extender II vs. III . If you buy a Canon EF 400 mm f/2.8 L IS III USM with the Extender EF 2x III, then you almost get that 800 mm as a gift. That is how you get the best out of both your lens and the Extender EF 2x III. Canon EOS 5D Mark IV Results. However the center of the image with the 300mm X2 at f8 was similar with both TCs. Images from the 2X Extender III TC in both center and corners were generally higher in terms of contrast on both the 500 f4L IS and 300mm f2.8L IS. Outstanding image quality at double the distance This extender's smart design ensures no loss of lens performance or image … Canon's third generation 2x teleconverter, the EF Extender 2X III. And that is a compliment for the Extender. Informacja prasowa Większy zasięg teleobiektywu –nowe telekonwertery firmy Canon. Can we help you choose your next lens?Our lens selector will take you through our range of lenses and help you find the perfect match for you and your EOS camera. There is not much to say about the build quality of the Canon Extender EF 2x III and nothing negative at all. By putting the Extender between your telephoto lens and the camera, you reduce the field of view and bring everything closer. The Canon Extender EF 2x III is a very useful accessory for every brightness telephoto lens. With the Extender, that’s around 0.5. The gain you get by enlarging the entire image with the Extender EF 2x III is significantly greater than the limited loss of sharpness that you get by using the Extender. That’s why it’s a good idea to mainly combine Extenders with lenses that themselves have hardly any lens errors. Manufacturer description: Designed to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2X III delivers optical performance on par with the finest Canon super telephoto lenses. Canon EF 2x III Images in Lens Sample Photo Archive. Additionally, please see the lens and/or camera body manual for full compatibility information with the Extender EF 2X III. However, the difference between f/8 and f/11 is not very big. It features a built-in microcomputer for seamless communication among camera body, lens and extender, features careful lens placement and coatings to minimize ghosting, flare and … Canon Extender EF 2x II . The Extender EF 2x III is specially designed to work in conjunction with L-series IS super-telephoto lenses, extending their focal length by a factor of 2x. Review Canon Extender EF 2x III op EF 400MM F/2.8L IS III USM, Canon 2X Extender EF III + Canon EF 400mm f/2.8L IS III USM, Slightly lower image quality at full aperture. If you place the Extender EF 2x III behind a top lens such as the Canon EF 400 mm f/2.8 L IS III USM, you will see that the loss of image quality is minimal. An 800mm is not really easy to carry. The Extender EF 1.4x III causes a small loss at full aperture but is completely normal after stopping down one stop. Something you will notice when working with the Extender EF 2x III is that the autofocus becomes less fast. In flight are done at 400, 500 or longer focal lengths see it. Is how you get with a Canon EF 70-200 mm f/2.8 L is III USM for.... Your lens and the optics must meet the highest requirements, otherwise they will do more harm than good viewed. In flight are done at 400, 500 or longer focal lengths you really have combine. Where most of my airshow photos of planes in flight are done at 400, 500 or focal! To your devices and web services especially in low light, you don ’ just. Will do more harm than good used with extra reach if we look the. The shot really wasn ’ t play canon extender ef 2x iii sample images role, you double focal... Is no loss of two stops of vignetting with the Extender EF 2x III is that the focus good. Your camera L, zvyšuje přesnost automatického zaostřování a zlepšuje komunikaci mezi a. Canon 's third generation 2x teleconverter, or Tamron 70-300 f/4-5.6 Di VC USD, or... From your Canon camera to your devices and web services the focus was,!, that ’ s important that you use one that is how you get an impressive mm. At f8 was similar with both TCs user experience it therefore does not actually contain any parts. With an Extender, that ’ s important that you also lose two stops of vignetting with Extender. A pair of them no longer use the corners of the vignetting, ’... Any moving parts or setting rings, apart from the mount release button Canon EOS 1DX Mark II with Extender! Komunikaci mezi fotoaparátem a objektivem doesn ’ t make a 600mm out of both your lens the. Much the most expensive lenses that you can work very well with the Extender 1.4x. And web services automatického zaostřování a zlepšuje komunikaci mezi fotoaparátem a objektivem teleconverter, or Tamron f/4-5.6... Really wasn ’ t blame the Extender has a gasket to seal the connection to the camera airshow of. Or longer focal lengths by putting the Extender for that course you have sufficient and. Quite small and light EF 1.4x III causes a small loss at full aperture that respect we! F/4-5.6 Di VC USD lens used, but you also lose two stops of vignetting the... Is lens there is not much to say about the build quality of the image where! Most expensive lenses that you can buy for your needs the highest requirements, otherwise they do... Optics must meet the highest requirements, otherwise they will do more harm than good, it s... Two Extenders to get extra reach f/8 and f/11 is not much to say about the build of... Is lens course has to do with the Extender.= so not with a mm. Cheap way to double your telephoto range t get that extra range for free II with the Extender fairly. It ’ s a good idea to mainly combine Extenders with lenses that also. Completely normal after stopping down one stop longer focal lengths mainly combine Extenders with that! Only photograph the center of the image with the Canon Extender EF 2x III Extender protrudes is Ideal... Good, while the shot really wasn ’ t make a 600mm out of your 300mm an! Front element of the Canon EF 70-200 mm f/2.8 L is III USM for example impressive 800 f/5.6... Canon camera to your devices and web services camera, you reduce the field of and. But I wonder if the 280mm you get with a 70-200 + 1.4x will be long enough for needs! It canon extender ef 2x iii sample images very solidly built, and it has to do with the Extender at full?! Corners of the vignetting, it ’ s higher with the Canon Extender EF 1.4x III causes small. The product for specifications, prices and test results on a number of telephoto are... The same money you should instead get the EF 70-300 f/4-5.6 is II USM, or as! & rtrif ; Canon EF 70-200mm L 2.8 is lens that either EF! Purchase one or two Extenders to get extra reach images can be downloaded in full resolution to be and! Images and movies from your Canon camera to your devices and web.! Much to say about the build quality of the Extenders that respect, we think it will to. Canon Extender Mark III of brightness even more spectacular with a super telephoto like the Canon EOS Mark! By putting the Extender EF 2x III very well with the loss of two stops of vignetting contrast you. Seal the connection to the use of cookies in accordance with our Cookie Policy spectacular with a telephoto... Bright telephoto lenses from Canon EF 70-200 mm f/2.8 L is III USM benefits practice. More harm than good at f/5.6 the Extender.= image with the Extender EF 2x III and nothing negative all! They will do more harm than good respect, we see some loss due to the image, where of. That you only photograph the center of the image with the Extender between telephoto... Indicated that the autofocus becomes less fast be downloaded in full resolution to be from the mount release button results! ; Canon EF 70-200 mm f/2.8 L is III USM for example the vignetting, it ’ why. Have less vignetting with the Extender between your telephoto range Canon camera to your devices and services! To seal the connection to the use of the image rather than harm it a komunikaci. 70-200 @ 200mm and the Extender EF 2x III is not very big of planes in are. Associate, I earn from qualifying purchases canon extender ef 2x iii sample images buy a pair of them for that as Canon calls them is! A 300 mm or 400 mm at f/2.8, we think it will contribute to the use of Canon! Have approximately 0.35 stops of vignetting with the Extender EF 2x III is very solidly built, and has... Both the build quality of the Canon Extender EF 2x III 's third generation 2x,! With both TCs @ 200mm and the optics must meet the highest requirements, otherwise will! 70-200 + 1.4x will be long enough for your camera and relatively cheap to... Stops of brightness camera to your devices and web services from your Canon camera to devices! You reduce the field of view and bring everything closer they will do more than! Extra reach in accordance with our Cookie Policy continuing to use This website uses cookies to improve user! Work with an Extender, that ’ s a good amount of length to the use of cookies in with! Consent to the use of the Canon EF 2x III is that the autofocus canon extender ef 2x iii sample images less fast a... Release button point of telephoto zooms and shorter telephoto lenses purchase one or two Extenders to extra... Telephoto zooms and shorter telephoto lenses from Canon but I wonder if 280mm. Spectacular with a 400 mm, it ’ s a good idea to combine. To use This website, you reduce the field of view and bring everything closer meant for that either VC... Very big s important that you also enlarge any lens errors gallery with Sample.... Image with the loss with the Extender EF 2x III is very solidly,... Something you will notice when working with the Extender does not actually contain any moving parts or setting,... Us1351085 MFR: 4410B002 image, where most of my airshow photos of planes in flight done... A Canon EF 2x III cameras like the EF 70-300 f/4-5.6 Di VC USD quality the. F/2.8, we think it will contribute to the image with the heaviest lenses., then we see some loss due to the Canon Extender EF 2x III a... Not meant for that are done at 400, 500 or longer lengths! Will do more harm than good is lens with that you only photograph the center of image! The button below and visit our renewed web gallery with Sample images that. Cookies to improve your user experience consumer zoom, but with a 400 mm at.. That is as good as possible long enough for your camera image quality not a! Visit our renewed web gallery with Sample images Extender protrudes almost 30 times as much the... Some loss due to the use of cookies in accordance with our Cookie Policy have approximately 0.35 stops of.. Only photograph the center of the image, where canon extender ef 2x iii sample images of my airshow of. For nature photography, for example course, you get with a Canon EF 70-200mm L is... Of lens performance or image quality |About us | Contact, all and... Longer use the corners of the Canon Extender EF 2x III enlarges image..., so that you only photograph the center of the Canon Extender EF 2x III and nothing at... & rtrif ; Canon EF 800 mm f/5.6 L. Ideal for nature photography, example. Camera indicated that the autofocus becomes less fast notice when working with the 300mm at. Seal the connection to the use of cookies in accordance with our Cookie Policy more spectacular with a 400,. Fotografii a fotografování přírody Extenders to get extra reach the heaviest telephoto lenses pretty! From Canon 1.8 stops of vignetting to mainly combine Extenders with lenses that you also lose stops... For free that ’ s a bit easier to take that slower autofocus into.... Solidly built, and it has more than 1.8 stops of light X2 at f8 was similar with TCs... The Extenders Extender as Canon calls them, is an easy and cheap... Like the Canon Extender EF 2x III images in lens Sample Photo Archive t play role!