Upcoming Viltrox 2x E-mount Teleconverter
p.2 #1Upcoming Viltrox 2x E-mount Teleconverter
Of course that never will happen.
That would result in big trouble with Sony. Viltrox is not crazy to risk that.
That would result in big trouble with Sony. Viltrox is not crazy to risk that.
Dec 07, 2025 at 12:30 PM
p.2 #2Upcoming Viltrox 2x E-mount Teleconverter
Highly doubtful. They’d have to likely spoof some sort of identifier in the code that tells the camera it is a legit Sony lens or not… pretty sure Sony has a far more well funded legal team the Viltrox.
DWOfPaul wrote:
I already have the Sony TC 2x, but If the Viltrox TC can unlock 15fps+ continue focus on Sigma lenses that would be game changing.
Dec 07, 2025 at 12:59 PM
p.2 #3Upcoming Viltrox 2x E-mount Teleconverter
DWOfPaul wrote:
I already have the Sony TC 2x, but If the Viltrox TC can unlock 15fps+ continue focus on Sigma lenses that would be game changing.
Nope, TC and lens limitations are separate but still, I'm surprised that Viltrox made a TC for Sony and Nikon while supports 120 FPS on some GM lenses cause TC itself is NOT allowed.
I already have the Sony TC 2x, but If the Viltrox TC can unlock 15fps+ continue focus on Sigma lenses that would be game changing.
Nope, TC and lens limitations are separate but still, I'm surprised that Viltrox made a TC for Sony and Nikon while supports 120 FPS on some GM lenses cause TC itself is NOT allowed.
Dec 07, 2025 at 02:34 PM
p.2 #4Upcoming Viltrox 2x E-mount Teleconverter
bmike-vt wrote:
Highly doubtful. They’d have to likely spoof some sort of identifier in the code that tells the camera it is a legit Sony lens or not… pretty sure Sony has a far more well funded legal team the Viltrox.
Well, unlike Sigma and Tamron, Viltrox and Chinese companies are not under the legal contract instead of reverse engineering their technology like DSLR era. Even if Sony has a legal team, it wont work and affects any Chinese companies as they are well known for ignoring legal problems such as Leofoto. That's why Sony A7V had issues with Chinese lenses recently as they are not officially licensed with Sony.
Besides, Viltrox's TC itself already a huge problem which against Sony's 3rd party policy.
Highly doubtful. They’d have to likely spoof some sort of identifier in the code that tells the camera it is a legit Sony lens or not… pretty sure Sony has a far more well funded legal team the Viltrox.
DWOfPaul wrote
I already have the Sony TC 2x, but If the Viltrox TC can unlock 15fps+ continue focus on Sigma lenses that would be game changing.Well, unlike Sigma and Tamron, Viltrox and Chinese companies are not under the legal contract instead of reverse engineering their technology like DSLR era. Even if Sony has a legal team, it wont work and affects any Chinese companies as they are well known for ignoring legal problems such as Leofoto. That's why Sony A7V had issues with Chinese lenses recently as they are not officially licensed with Sony.
Besides, Viltrox's TC itself already a huge problem which against Sony's 3rd party policy.
Dec 07, 2025 at 02:38 PM
p.2 #5Upcoming Viltrox 2x E-mount Teleconverter
GraysonLake1987 wrote:
Well, unlike Sigma and Tamron, Viltrox and Chinese companies are not under the legal contract instead of reverse engineering their technology like DSLR era. Even if Sony has a legal team, it wont work and affects any Chinese companies as they are well known for ignoring legal problems such as Leofoto. That's why Sony A7V had issues with Chinese lenses recently as they are not officially licensed with Sony.
Besides, Viltrox's TC itself already a huge problem which against Sony's 3rd party policy.
Canon has already stopped some Chinese lenses. So I'm sure Sony can too.
bmike-vt wrote
Highly doubtful. They’d have to likely spoof some sort of identifier in the code that tells the camera it is a legit Sony lens or not… pretty sure Sony has a far more well funded legal team the Viltrox.DWOfPaul wrote
I already have the Sony TC 2x, but If the Viltrox TC can unlock 15fps+ continue focus on Sigma lenses that would be game changing.Besides, Viltrox's TC itself already a huge problem which against Sony's 3rd party policy.
Canon has already stopped some Chinese lenses. So I'm sure Sony can too.
Dec 07, 2025 at 04:01 PM
p.2 #6Upcoming Viltrox 2x E-mount Teleconverter
Also note that the pics Viltrox posted showing little degradation of IQ were shot on the A7C2. I would wait till real reviews with 50-60MP cameras come in to make any judgement.
Dec 08, 2025 at 06:06 AM
p.2 #7Upcoming Viltrox 2x E-mount Teleconverter
Sounds like a reverse engineering job to me 
Dec 08, 2025 at 06:53 AM
p.2 #8Upcoming Viltrox 2x E-mount Teleconverter
I have to wonder if Sony is gonna block Viltrox TC or not cause if they allow it, then Sigma can make one too especially since Sony does not allow 3rd party TC especially with 120 FPS + AF-C.
Dec 08, 2025 at 03:22 PM
p.2 #9Upcoming Viltrox 2x E-mount Teleconverter
Alan Parker wrote:
Sounds like a reverse engineering job to me
Yawn. So essentially the same as a Sony TC, only cheaper and with additional compatibility to the Viltrox 135 (which no one uses anyway). Now THAT'S a boring product 😅
Dec 08, 2025 at 10:59 PM
p.2 #10Upcoming Viltrox 2x E-mount Teleconverter
A tad more info, not much
https://petapixel.com/2025/12/09/viltroxs-new-2x-teleconverter-for-sony-e-mount-costs-under-300/
https://petapixel.com/2025/12/09/viltroxs-new-2x-teleconverter-for-sony-e-mount-costs-under-300/
Dec 09, 2025 at 09:29 PM
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p.2 #11Upcoming Viltrox 2x E-mount Teleconverter
Could this work with Tamron 150-500mm? That would make one happy camper... 
Cheers, A.
Cheers, A.
Dec 11, 2025 at 12:52 PM
p.2 #12Upcoming Viltrox 2x E-mount Teleconverter
bobek13 wrote:
Could this work with Tamron 150-500mm? That would make one happy camper...
Cheers, A.
Tamron is not supported.
Dec 11, 2025 at 03:13 PM
p.2 #13Upcoming Viltrox 2x E-mount Teleconverter
Performance with the 135 LAB lens seems quite bad.
Performance with Sony GM's seems to be on par with Sony's TC, but with less spherical glow?
Performance with Sony GM's seems to be on par with Sony's TC, but with less spherical glow?
Dec 12, 2025 at 02:58 AM
p.2 #14Upcoming Viltrox 2x E-mount Teleconverter
Someone from Facebook tested with Sigma 300-600mm F/4 and it works.
Dec 12, 2025 at 05:29 PM
p.2 #15Upcoming Viltrox 2x E-mount Teleconverter
Alan Parker wrote:
Performance with the 135 LAB lens seems quite bad.
Performance with Sony GM's seems to be on par with Sony's TC, but with less spherical glow?
Well I only understood "firmware update"... but thanks!
Performance with the 135 LAB lens seems quite bad.
Performance with Sony GM's seems to be on par with Sony's TC, but with less spherical glow?
Well I only understood "firmware update"... but thanks!
Dec 13, 2025 at 02:25 AM
p.2 #16Upcoming Viltrox 2x E-mount Teleconverter
hasenbein wrote:
Yawn. So essentially the same as a Sony TC, only cheaper and with additional compatibility to the Viltrox 135 (which no one uses anyway). Now THAT'S a boring product 😅
I mean, it being 1/3rd of Sony's price doesn't seem very irrelevant to me
Alan Parker wrote
Sounds like a reverse engineering job to meI mean, it being 1/3rd of Sony's price doesn't seem very irrelevant to me
Dec 13, 2025 at 09:07 AM
p.2 #17Upcoming Viltrox 2x E-mount Teleconverter
Just got my 2X from AliExpress in less than 2 weeks
Fully compatible with Sony electronics , FPS and all
Optical IQ not discernible from Sony
AFC not affected in any way
Case is not as nice but small issue
Best part is only $250.00
Blame US prices on tariff !!!
Fully compatible with Sony electronics , FPS and all
Optical IQ not discernible from Sony
AFC not affected in any way
Case is not as nice but small issue
Best part is only $250.00
Blame US prices on tariff !!!
Dec 18, 2025 at 01:02 PM
p.2 #18Upcoming Viltrox 2x E-mount Teleconverter
deevee wrote:
Just got my 2X from AliExpress in less than 2 weeks
Fully compatible with Sony electronics , FPS and all
Optical IQ not discernible from Sony
AFC not affected in any way
Case is not as nice but small issue
Best part is only $250.00
Blame US prices on tariff !!!
Thanks for the feedback. Do you still have the Sony TC 2x for comparison ? On which lens was it tested ?
Just got my 2X from AliExpress in less than 2 weeks
Fully compatible with Sony electronics , FPS and all
Optical IQ not discernible from Sony
AFC not affected in any way
Case is not as nice but small issue
Best part is only $250.00
Blame US prices on tariff !!!
Thanks for the feedback. Do you still have the Sony TC 2x for comparison ? On which lens was it tested ?
Dec 18, 2025 at 01:26 PM
p.2 #19Upcoming Viltrox 2x E-mount Teleconverter
deevee wrote:
Just got my 2X from AliExpress in less than 2 weeks
Fully compatible with Sony electronics , FPS and all
Optical IQ not discernible from Sony
AFC not affected in any way
Case is not as nice but small issue
Best part is only $250.00
Blame US prices on tariff !!!
So with Sony GM lenses, does it supports 120 FPS?
Just got my 2X from AliExpress in less than 2 weeks
Fully compatible with Sony electronics , FPS and all
Optical IQ not discernible from Sony
AFC not affected in any way
Case is not as nice but small issue
Best part is only $250.00
Blame US prices on tariff !!!
So with Sony GM lenses, does it supports 120 FPS?
Dec 18, 2025 at 06:20 PM
p.2 #20Upcoming Viltrox 2x E-mount Teleconverter
On A1 it can do 30FPS
Don't have A1 II , nor A9 III so can' t tell
Sorry
Don't have A1 II , nor A9 III so can' t tell
Sorry
Dec 18, 2025 at 08:04 PM