Wide range of uses The grey side is for exposure correction and the white side for white balance setting. Gray cards can be used for incamera white balance or postprocessing white balance. Usage introduction Place the gray card in the scene to be photographed, orient it at a defined angle to the incident light, and take a reading from it with a reflected light meter. This helps ensure consistent exposure across shots. An essential part An essential component in digital photography for both photographers and hobbyists. The 18% grey white balance focus card provides a standard reference object for exposure determination in photography. Unique design features The card helps prevent photos that are too dark or too bright and reduces color casts such as bluish or yellow tints. The white balance card is wearable, washable, foldable and resistant to deformation, making it durable for repeated use. Practical use scenarios Studio portraits: Use the grey side to meter exposure and the white side to set accurate white balance for natural skin tones. Onlocation shoots: In changing light, rely on the card to maintain consistent exposure and color across brackets or sequences. Product photography: Achieve faithful color reproduction by calibrating white balance incamera or during postprocessing. Care and handling Wearable, washable, foldable, and antideformation design supports frequent handling and transport without compromising performance. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.