Originally posted by rawr nd the Focus Tune chart that has been submitted also says AFA was used.
AFA + release priority = retest needed.
Not necessarily true - auto-focus still takes place during release priority mode, the only difference is that you as the photographer have the choice to release the shutter whether focus was acquired or not. On the flip side , if you hold down the AF button until the red reticle confirms focus (light up square and or audible beep) before pressing the shutter amounts to the same thing.
Let me reiterate in a friendly way that I am 100% confident that I confirmed focus for each and every focus adjustment in my test.
Regardless, the body that gave those results (body #2) has gone back and a similarly configured Body #3 is giving results closer to what I would expect. I am happy to retest and resubmit afs focus priority results (I have them at hand already at home) and they show erratic behaviour nonetheless.
As for the grip feeling like it is coming away from the body - I have access to an older canon 1ds mark ii - with over 150,000 clicks, and the grip is as solid as day one. It also has a rubber grip over magnesium alloy. It is this rubber grip that I suspect is coming away from the magnesium alloy that is creating this sensation. Believe me this feels more than just expansion from heat / humidity.