canarywood1 Loc: Sarasota,Florida

Thanks Bill



Thanks Bill,i see the extenders work quite well.

pasiuk57 Loc: Apple Valley, Minnesota

How long a wait for the Nikon mount???

Bill Emmett Loc: Bow, New Hampshire

You will not know this until the camera becomes a reality, and in your hot hand. As for me, if it focuses or not it's not a problem. You can always tape the pins.

bigwolf40 Loc: Effort, Pa.

Bill I have a Tamron 1.4 TC and it works with the Tamron 70-300 lens with all the functions on both the 7D & T3i so do you think it will work on the 150-600 lens and the 7D and T3i....Rich

Bill Emmett Loc: Bow, New Hampshire

Let me get my crystal ball. Oh, yes here it is. I would think it would not be will it work, but how well. All I can say is my Kenko did give a slower focus response, but it did focus as you can see. You may want to give it a little help though. There is a lot about faster focus speed. First is the cameras battery fully charged? Is there enough contrast for the focus beam to discern the available contrast in the subject. Then if there is a pathway for the motor to run through the converter. Is there a built in loop that needs to be attended to, like taping the pins? You could just buy the lens, try it out for a few days and if it doesn't work for you return it. I do know it will surprise you with its image quality without any extenders.

bigwolf40 Loc: Effort, Pa.

Thanks Bill for your reply. I know it worked pretty good with the 70-300 so I was hopping your crystal ball would be able to give me the answer but as you said the only way to really find out is to try it..Thanks again for your reply....Rich

speters Loc: Grangeville/Idaho

No, I'm 100% sure that it will not focus with the ext. (especially the 2x). You talking f10 to f12.6 here, so I say - no way!