Most people say that it is used to get exposure "right"... I say it is used to get exposure close. When I have used it, I have it within the same light as whatever I am shooting, having the card essentially reflecting the light into the lens. I set aperture, shutter, and ISO to get the little light meter centered. If I shoot with these settings, it usually comes out properly exposed, but a little flat. That is why I say its used to get it close.
I made the mistake of going on a shoot as a helper and...Show more →
Thanks for the information, and time! Yes, for me, I settled on using auto settings on my camera to shoot the grey card, also, i tilted it to absorb the light source I was shooting in, and thank Nikon, my D700 has enough presets to save multiple sources, however, I have been set to just NEF aka RAW to shoot, so I could just adjust in Lightroom, not the best option for everything, I assume, but, it lets me be lazy! I also read using a plain white paper could also set the AWB, but thats another weird learning curve!