Kenko Pro 300DG

[Steveo_Hants]

I have just got 2x in the post this morning but I am very disappointed! Using it inbetween my D50 and Sigma 70-200 f2.8 it can't seem to AF, it just continually hunts, even in great sunshine outside. MF it is fine. Is this normal or have I got a problem?

[chuckles]

I'd say you have a problem...... try lightly cleaning the contacts on both ends of the converter...... :shrug:

[Steveo_Hants]

Hasn't fixed it!

[chuckles]

I'd say it's bust then! That combination should work.... unless anybody knows differently......

Silly question, does the lens still focus ok without the converter?

[Steveo_Hants]

Yeah the AF on my sigma is fantastic

[paulc]

my kenko 300dg 2x auto focus's superbly with my d70 and my nikkor 80-200 f2.8....is there a limiter on the sigma lense like the nikon?