David_MC wrote in post #18734425
I moved an object further away and that seemed to help. I set it to oneshot instead of servo but that didn't make a noticable difference.
My autofocus c.Fn settings are as follows:
AI Servo Tracking Sensitivity: -1
AI Servo 1st/2nd img priority: AF Priority/Tracking Priority
AI Servo AF tracking method: Main Focus point priority
Lens drive when AF impossible: Focus search on
AF Microajustment: no changes made
Manual AF pt. selec. pattern: Continuous
VF display illumination: Auto
Display all AF points: Enable
Focus display in AI Servo/MF: Enable
AF-assist beam firing: Enable
Orientation linked AF point: Same for both vertic. /horiz.
Mirror Lockup: disable
All though it is looking a bit more like user error.
Fair; I didn't really expect the servo vs one shot to make an actual difference; it's just easier to tell when the camera thinks focus is locked since it hard stops the focus instead of "floating" it the way servo does. Those settings look normal and expected, so should be all good there.
The primary thing is that if you are actively touching the camera, unless you are Plastic Man, you can't hold your arm out in front of the lens far enough to be outside MFD while still operating the unit @400mm. Give it a few more tries and see if your results stay within your expectations; if not, just let us know what your further observations are and we'll see what we can guess