Anyone have or have used this collar on a 70-200 Canon L. Canon want's $149.00 for their collar (for $1100 you would think it would come with one) Opteka has one for this lens for $39.00 on Amazon, looks ok in the pic and reviews seem to be pretty good. Thoughts?

I've got one for my 70-200 Randy, you'll hardly be able to tell the difference. It's even painted exactly the same as the Canon if you get the white one. Functionally pretty much identical.

Thanks Rich, good to hear.