i've just read this article by thom hogan:
what thom hogan mentioned was about the 12% grey instead of 18% grey.. and in this case, nikon calibrate their camera metering system to 12% grey.
myself do not own a grey card but intend to do so.. but i have to make this clear before hand.
according to thom hogan, when we manually set exposure base on the 18% grey card, we have to open up 1/2 stop. so how does it correlate with the camera metering, for instance when i do not meter on a grey card but on the subject itself directly? do i need to compensate my exposure?
the fact is, i normally compensate my metering by -0.3. cos the original metering is a bit too bright for me. is this proper?
any kind soul pls advise, thanks!