Kenko PRO-300 2x DG converter

Joined
Jul 27, 2005
Messages
5,279
Location
Denmark
Does anyone have any experience with this converter? Will it autofocus with the 300 mm AFS f.4? It is only half price of the Nikon 2x converter.

Or should I forget about the 2x converters and get the 1.7x instead? I alredy have the 1.4 converter and it works like a charm with the 300 mm.

I'll apreciate any inputs. Thanks.
 
Joined
Jul 29, 2006
Messages
50
This Converter works quite well with some long nikkors. AF, AF-S and VR are supported. It is very good with 300/4.5 ai, 50-300ai(!), 400/3.5 and 500/4ai. The dedicated TC-301 is nearly invisibly better.
On 300/f4 you get 600/f8 and need to stop down. AF will be rather slow and it makes absolutely no sense without a very good tripod (same for TC20, of course). Within this limitations you can get some very sharp pictures.

Carlsson
 
Joined
Jul 27, 2005
Messages
5,279
Location
Denmark
Thanks Carlsson. If I need to stop further down from f8 I would have to have plenty of light though or shoot high ISO.
 
Joined
Mar 12, 2007
Messages
151
Location
Malaysia
By the way, with 2 stops loss wouldn't the f.4 become a 7.1?
It' going to be f/8.

BTW, I've used the Nikon TC20E on the AF-S 300mm f/4 and if camera shake / vibration is taken care, images are pretty acceptable for the reach you get. I've read that the Kenko 2x TC will degrade image a lot unlike their 1.4x TC which is quite comparable with Nikkor's 1.4x TC.

Best compomise is the 1.7x TC.
 

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