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.
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 "
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.
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.
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.
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.
I would recommend this to a friend!
Response from sony.comBy Sony North America Customer Support, August 8, 2019
Hi, Doc P!
Thanks for leaving a review of your teleconverter lens. We appreciate your time. Thank you for choosing Sony!
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.