[Scott Davis]

I can see a jump in the auto focus, because the depth of field changes when your light level increases or decreases- iris open, shallow DOF, iris closed, greater DOF- and if there’s more light, like when the strobe was set off, it would fool the camera into thinking that it had to adjust.

Why are you using auto focus anyway? I would imagine that you had it on auto iris as well, which would really explain why the glitch in the auto focus/iris change…

Become a better shooter- turn off your auto-anything. Learn to make your camera do what it’s supposed to do rather than rely on the technology to do the work for you. You won’t get any iris or focus searching and you’ll simply get more consistent video that won’t be a nightmare to post.

Scott