Bob - sent you a PM about Kenko 1.4Mike,
I unknowingly bought a 300 f/2.8 AF-S D that had the f/stop ring modified. It was not until a little over month later that I found my nikkor 1.4 TC 14E II and TC20E II gave me a FEE error message with my D300. Strange, but the combo works with my D50.
I sent the lens, TC, and camera to Nikon via my local dealer, but Nikon refuses to fix it.
The original seller of the lens says it worked with her kenko. Now I have to either sell my Nikkor TC's or use a lesser camera. No sympathy from the seller. Buyer beware. What a mess...
I use my Pro 300 with my 300 2.8 af-s v1 with superb results. Don't be afraid of it.I can purchase a Tamron 1.4 TC SP locally, but not the Kenko Pro 300
1.4x TC. I know they are made by the same company, but is one better than the other? How about the 2X? They will be used on a Nikon 300 2.8 AFS-D.