Novoflex now offers all photographers the perfect control card for exposure measurement and white balance adjustment for digital cameras in a small, handy plastic card. The control card is a double-sided flexible card made of special plastic with a gray and white anti-reflective coating. The gray area serves as a reference surface for exposure measurement, while the white side allows for correct white balance for digital photography. You measure the respective side of the control card with your DSLR and perform an exposure measurement or a white balance adjustment – and your camera is perfectly set for the current lighting conditions, ensuring perfect image results. The Novoflex Control Card Gray / White (Zebra) is a must-have in any camera bag.