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UPDATE
The forum will be moving to a new domain in the near future (canonrumorsforum.com). I have turned off "read-only", but I will only leave the two forum nodes you see active for the time being. I don't know at this time how quickly the change will happen, but that will move at a good pace I am sure. ------------------------------------------------------------
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I find a large discrepancy between red and green channels AFMA from FoCal for the 400mm DO II and 2xTC III. It's fine for the bare lens and also with the 1.4xTC. The 2xTC III on the 300mm f/2.8 II gives perfect agreement between green and red channels so it's not the TC.
Has anyone else calibrated the DO II lens with FoCal and found this discrepancy?
Has anyone else calibrated the DO II lens with FoCal and found this discrepancy?