Photography Gray Card 3-Color Set with White Balance Adjustment Strap, Small Size This is a card set for adjusting accurate color tones (white balance) in digital photography and videography. The set includes three cards: white, gray, and black. It's useful for obtaining custom white balance according to the light source at the shooting location and for checking proper exposure. The size is approximately 8.5cm x 5.4cm, the same size as a standard credit card or transportation IC card, so it can be easily carried in a wallet or camera bag pocket. The included red neck strap has a detachable buckle, making it convenient to quickly remove and use only when needed. It's in a clean condition with little use. The items for sale are only the three cards and the strap. Please note that the camera body, tripod, background color chart, etc., shown in the usage example photos are not included. #WhiteBalance #GrayCard #PhotographySupplies #CameraAccessories #ColorTemperature #Exposure #WhiteBalanceAdjustment #CustomWB #VideoShooting