Use of Gray Card (Grey Card)

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Jonathan - 26 Mar 2004 21:23 GMT

I wonder if distance matters when measuring exposure using gray card.
I am using a SLR camera that offers spot metering. As long as the
spot metering area is completely covered by the gray card, does it
matter if the gray card is held at a close or far distance from the
camera?

I guess I should do the experiment myself, but wonder if anyone knows
the answer for sure.

Jonathan

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Alan F Cross - 26 Mar 2004 22:16 GMT

>I wonder if distance matters when measuring exposure using gray card.
>I am using a SLR camera that offers spot metering. As long as the
[quoted text clipped - 6 lines]
>
>Jonathan

Distance does not matter, but don't cast a shadow with the camera! Much
more important can be the angle of the card. I would place the card
square on to the lens axis. Happy to be contradicted, so long as you say
why.

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Alan F Cross

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