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Photographer’s flash unit affects autofocus and sound
Here’s a weird one. I was shooting a wedding with my DVX100 and as I’m editing the footage I noticed in one particular shot that when the photographers flash went off the autofocus went fuzzy, then came back. The Photographer was using a flash on the camera, but also had an assistant with a handheld with IR slave. Now – also there seems to be an audio hit at the exact same time. It’s almost like an electronic crackle. It’s not big – and you don’t really notice it unless you listen really carefully, but it’s there. Has this ever happened to anyone else?
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1 Reply
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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
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