The Mini Grey Balance Card is a pocket-sized version of the 18% Grey reference square used in the standard 24-patch ColorChecker. This grey is scientifically engineered to provide a precise uniform surface that is spectrally neutral (reflecting equal amounts of red, blue and green) in all types of light conditions.
Even in a controlled studio environment, establishing an accurate neutral balance at the start of each new photo session can greatly improve image accuracy. The ColorChecker Mini Grey Balance gives photographers a clear reference point to work to. You can then adjust the digital camera’s colour sensitivity to exactly match the ambient lighting conditions, effectively changing what that the camera ‘sees’.