
Originally Posted by
Arthur Morris
Weird, My understanding is that only the central sensor would work if you tape the pins....
Absolutely 100% correct,exactly what I read, but then I found out it doesnt work well at all.
TR seems to work much better, and idea to try came from Canon Forum though understanding why is more of a challenge!
That aside, I have always recommended/stated/written that folks using a 100-400 with a 1.4X TC must be on a sturdy tripod (preferably with a Mongoose M3.6) and that with a pro-sumer body that they focus manually.
I agree with this also and some time back started using tripod for most shots with this combo.I have a Giotto with Pro BALL- head system MH 1302-6652.
Trying to make sharp images hand holding with the top right center is pretty much never going to produce a sharp image.... Ever.
It certainly makes life hard