Grey side serves as reference area for exposure metering.

White side enables correct white balance.

Camera takes a light reading of either side of the card to perform an exposure measurement or white balance. 

Equipment Category
Camera
Equipment Collection
SIAT Equipment - Available to SIAT students
Course / Who may borrow
IAT 202 IAT 244 IAT 344 IAT 443
Units
5
Loan Period
2 day