D800 autofocus problems with 2x teleconverter

Started Jan 26, 2014 | Questions thread
larrywilson
larrywilson Veteran Member • Posts: 7,013
Re: D800 autofocus problems with 2x teleconverter

DHNPhoto wrote:

I have a Nikon D800 and having no luck with focus when using a 2x teleconverter. I've tried both Sigma and Tamron 2x teleconverters on the following lenses. Sigma 70-200 2.8 (non OS version), Tamron 70-200 2.8 VC version, Sigma 120-300 2.8 (non OS version), Sigma 150mm 2.8 macro (non OS version). It will never lock focus, it just pumps back and forth forever hunting. They all work fine without the 2x. My older D300 worked fine with all of these combinations. Any suggestions?

Using a tc 2.0 converter on an f4.0 lens will make the auto focus slow and unstable.  I sold my tc 2.0 long ago.  The 2.0 converter will work better on an f2.8 lens.

Larry

 larrywilson's gear list:larrywilson's gear list
Nikon D850 Nikon AF-S Nikkor 70-200mm F4G ED VR Nikon AF-S Nikkor 500mm F4E FL ED VR Tamron SP 85mm F1.8 Di VC USD Tamron SP 150-600mm F5-6.3 Di VC USD G2 +6 more
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