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Shooting in mirror


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#1 katie

katie
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Posted 24 January 2006 - 05:45 AM

I have a few shots to do of a mirror, filming the reflection. I've been told that shooting in mirrors affects focal length adjustments. Could anyone please explain this to me?
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#2 Laurent Andrieux

Laurent Andrieux
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Posted 24 January 2006 - 06:05 AM

I don't think so. The things I can tell are :

- A mirror doesn't reflect 100 % of the light, that means that there is a light loss, so the metering you get on the set won't be the one you really get

- Usual mirrors have a double reflection (one at its glass surface, one at it's reflective surface), so if you don't want this you need an (expensive) surface aluminated one.

- When you focus on a object seen through a mirror, you have to take in account the distance from camera to mirror + from mirror to actual object.
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