reflected light meter will cause cameras to over expose black subjects and
under expose white subjects. The camera meter wants to make the
primary subject 18% neutral gray.)
Spot meter priority
subject that needs to be properly exposed:
White - meter will under expose so...over expose 2 stops.
If light gray - meter will under expose so...over expose 1 stop.
If dark gray- meter will over expose so...under expose 1 stop.
If black - meter will over expose so...under expose 2 stops.
If primary subject is
white, best results can be achieved by metering white and over exposing.
On newer matrix metering type
cameras, shoot the matrix meter unless the background is black. The
camera is already programmed to adjust exposure properly for white