I just did some testing using my Canon 70-200mm f/2.8 Mark II with the just updated FW of Metabones IV. Here are my findings:
1) Using the flexible AF from small to large, the AF even in continuous mode, the AF works great as long as the AF points (in large) or point (in small) are within the inner section/cluster of the PDAF points.
2) Using the small AF point, if I move it towards the edge, the setup won\'t focus, it just hunts and hunts. If I move in the AF point towards the center, like 3 steps from the edge, then AF works just fine again. This is for all FL although it is a tad slower for FL setting approaching the 200mm marking.
3) The 135mm setting seems to be the limit of the AF to be able to work regardless of which AF point being used, whether from the inner cluster or not.
4) The lighting conditions do not seem to matter much for the above points.
Sep 20, 2015 at 03:44 PM
Previous versions of AGeoJO's message #13207754 « A7RII and Canon lenses AF compatibility »