Nikkor 2x converter with sigma 70-200F/2.8

[surasak]

I was using my friend D800 with Sigma 70-200F/2.8 lens plus a Nikkor 2x conventer in a indoor event.But somehow i could not function on AF.May anyone point out what goes wrong.
Thanks

 

[daredevil123]

For Sigma zooms like 70-200/2.8 or 150-300/2.8, you should be using Sigma 2x teleconverter.

 

[surasak]

For Sigma zooms like 70-200/2.8 or 150-300/2.8, you should be using Sigma 2x teleconverter.

Which means if I were to use Nikon or kendo it sure can't be on AF mode?

 

[daredevil123]

Nikon TC does not play well with non Nikon lenses. there are folks out there who modify their tc to make tgem work but it is a risk only you can decide to take.

http://nikonpages.heymanphotography.com/tcmod/index.html

Kenko TC I had one. It worked on a nikon 80-200 but never tried with a sigma lens. Heard that it should work. But IQ is better and af faster with a sigma tc.