Quote:
Originally Posted by Dave Morrison
I'm assuming that Tom zoomed in on the white card enough that there was NO other image area visible to the camera, but it never hurts to ask. Also, I've never been absolutely clear about the actual exposure setting to use when doing the WB setting. I usually make sure that I've cleared any zebra patterns away from the white card image before I hit the "Set" button but I'm never sure how dark to make it before I set it.
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This is a good question. I've been using automatic metering such that the grey card is a spike at 50% on the histogram, both for camcorder and DSLR.