Sigma 30mm F2.8 by night

Started Apr 1, 2012 | Discussions thread
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slaybells Regular Member • Posts: 156
Re: Sigma 30mm F2.8 by night

Can you try making the lens change focus while recording, and see if the sound changes? Does the focussing actually work? from the sound, it looks like the focus motor is slipping against the clutch or something - the fact it is continuous may mean it is trying to achieve focus but not making progress.

Why it works in photo mode is a mystery.

I do not think this is indicative of a problem with all Sigma lenses, I just think you got a dud.

cheers
Slay

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