Viltrox 2x teleconverter

Bobg657
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p.1 #1 · Viltrox 2x teleconverter

Curious, anyone tried this on a Tamron 50-400 or Sigma 500 Sport?

Thanks!

Feb 27, 2026 at 07:09 PM

MikeEvangelist
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p.1 #2 · Viltrox 2x teleconverter

There is a long thread on it, here - https://www.fredmiranda.com/forum/topic/1922434/0?keyword=viltrox#16926503

Feb 27, 2026 at 07:12 PM

DWOfPaul
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p.1 #3 · Viltrox 2x teleconverter

From what I have read, it works with the Sigma 500mm f5.6. I don't think it would work with the Tamron 50-400, as I don't believe that lens was designed for a TC like the Sigma 500mm lens was.

One thing to be aware of is that Sigma lenses have no idea the Viltrox TC is there so Exif data will be incorect and it probably hurts AF more than a supported TC. But since Sony won't officially allow Sigma to support TCs, it's probably the closest we are going to get.

Feb 27, 2026 at 07:17 PM

Bobg657
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p.1 #4 · Viltrox 2x teleconverter

Thanks guys, I'll check the thread out!

Feb 27, 2026 at 07:27 PM

Stargenx
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p.1 #5 · Viltrox 2x teleconverter

Bobg657 wrote:
Thanks guys, I'll check the thread out!

To add on � I've included some examples with the Viltrox 2,0x in the Sigma 500mm thread (linked here) (obviously on the aforementioned lens.)

Feb 28, 2026 at 09:49 AM

Bobg657
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p.1 #6 · Viltrox 2x teleconverter

Looks good, thanks!

Feb 28, 2026 at 01:43 PM


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