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Hace algunas semanas estoy probando mi nuevo Teleconverter 1.4x con mi zoom Sony 200-600 G y puedo decir que tiene muy buena definicion. Posiblemente la misma del lente original. Al momento de querer enfocar, puede ser que tarde un poquito mas para empezar a enfocar. Pero esto último no lo puedo comprobar.

Excellent quality when extra “reach” is needed. No noticeable quality lost but minimum aperture on 600mm is f/ 9.

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I have the 1.4x teleconverter on my Sony 200-600mm mounted on an A6400. A lot of my photos are longer range birds. I had read mixed reviews about pictures getting soft on the upper end. In good light, you'd need to pixel peep on a well composed photo. For closer shots, I could not pick out a photo taken with the 1.4 compared to not using one.

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Lo uso con el 200-600 y se ha convertido en un complemento esencial en fotografía de pájaros

Will this TC it ever receive firware upgradeto accept Sigma's 100-400? As Sony has limited Sigma's ability to use the Sony e mount for lenses only, and not for TCs also, Sony should make the TC able to accept sigma lenses as well. "As you noticed, yes, we released a new TELE CONVERTER TC-1411/2011 for L-mount camera, but not for Sony E-mount camera, which must be unreasonable for you. As you may already know, we are licensed from Sony to design and produce Sony E-mount lenses, and it must be done in accordance with Sony E-mount specifications and license agreement. In the specifications and agreement, there are no statements on teleconverters. So, this is why we cannot design and produce Sony-E mount teleconverters. So, at this point, we have no concrete plan and schedule for making TELE CONVERTER TC-1411 in Sony E-mount. We are so sorry we are letting you down. If you have any questions, please do not hesitate to contact us. Again, thank you very much for being our customer. Have a great weekend!Best regards, SIGMA CORPORATION Customer Support Department "

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He hecho unas pruebas caseras con el Sel100400, y los resultados me han convencido plenamente. He probado el 100-400 sin el TC a 400mm, y después a 290 + el TC1.4, que daba un similar 406 mm, y el resultado es indistinguible uno de otro, lo que quiere decir que los cristales del TC son de una calidad excepcional. A 400mm + el TC 1.4 está claro que algo de definición pierde, pero mucho menos de lo que esperaba. Muy buen trabajo de Sony.

I sent mine in for repair after years of use. I love it because I can get much closer with only losing a bit of light. Its certaininly worth it and seems to go on faste rthan changing lenses.

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Have had the 1.4 Teleconverter a month now. It’s an excellent addition to my 200-400 G lens.

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Really enjoy it so far. Rented it first, then bought it the next day. Especially useful for the moon, and for macro shots with the FE 100-400 F/4.5-5.6GM.

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I've used the 1.4TC many times now and the results are very good. It is obviously well made/quality and the images have no noticeable loss in sharpness. Increases the f stop from my 200-600mm lens which has a constant f6.3 to a constant f9. I use this mainly for getting 'closer' to static or slow moving wildlife and am very happy with it. I'm finding that im leaving it on the long lens most of the time. There are auto focus limitations due to the reduction in f stop (on my A7R3) - so maintaining focus with all shots whilst panning birds in flight is more difficult (but by no means impossble.) Of course for static or slow moving subjects there is no problem at all and you can use manual focus (with peaking) if needed. Very pleased.

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Unbelievably sharp on my copy of the 200-600 zoom. 840mm sharp as a tack and if you have good ligh you can get tack sharp handheld. But you need good light.

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Gives that bit extra reach when needed. There is no loss of image quality with the 1.4 on either the 70-200 2.8 or the 200-600 G. Overpriced though as these tc’s tend to be.

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Good, solidly built teleconverter. you get what you would expect from Sony, It does the job very capably.

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Bought a month ago. Works great with the exception of fast action and sports on my 70200 f2.8 GM OSS lens. Don't let that stop you though! Does well aside from that.

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When I used this with my Sony 100-400 I didn’t have any problems image quality is great

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I bought this on the back of great reviews, but quickly noticed vignetting problems. I thought I'd have it attached to my 100 - 400 lens pretty much all the time, but in fact it will be an expensive 'last resort' piece of equipment

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Para el precio que tiene no da la calidad esperada.

The Sony 1.4 teleconverter functions perfectly with good quality Sony lenses. I have used it with my 100 to 400MM GM lens and got unbelievable results. It is hand holdable for the average person, easy to use and gives you a 560 MM lens with the loss of one stop of light. The images produced are great.

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I bought this for my wife because she kept wanting to borrow mine

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Bought a new copy and its quite sharp. I also had a used copy before that performed excellent however that one had more corner vignetting than this one. There is still a bit of noticeable corner vignetting on this one that can be corrected with post-processing - taking one point off for tis though.

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This has been a very good investment no loss of speed or quality and if you are thinking about it go for it you will not regret it

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Es muy caro para lo que hace, que lo hace igual que el de cualquier otra marca, aún que sólo se puede usar de momento este, en formato montura E

Almost perfect, but not as sharp as I was hoping. Photos can be sharpened in post.

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This 1.4x Teleconverter holds superb glass which has no apparent impact on IQ. Strapping on to the 70-20 GM, it extends the length by approx 17mm / 5/8ths in. Compare that size to the opposition, I have! Although you drop to F4, this is a useable amount of light for shooting in hedgerows during overcast conditions - in concert with the light sensitivity of the A7R2, it is a pleasure to see the results.

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