With its size and included carrying case, this gray card is indispensabled tool for maintaining consistent color Balancing across various lighting conditions For professional photographers, photography enthusiasts, videographers, and anyone requiring accurate color calibration in their work From durability, waterproof component, features a double sided designing with 18% gray side for exposure control and a white side for color balancing Perfectly for outdoor, studio photography, product photography, and video where precise color accuracy is essential Achieve precise color accuracy in your photos with the Fotover 18% Gray/White Balancing Card, ensures color reproduction and enhances the professionalism of your photography