The digital gray card and white balance tools are perfect for helping achieve white balance and color correction. In addition to providing a means for measuring exposure, a gray card provides a convenient reference for white balance, or color balance, allowing the camera to compensate for the illuminant color in a scene. In other words the digital color card is a perfect addition to any s-tudio because it allows you to create s-harp i-mages that really reflect the color of the scene. Features: The black card achieves truly deep blacks (RGB 16,16,15). The grey card displays superior spectral neutrality with measured values of 162, 162, 160. The white card has a tested RGB value of (220, 224, 223). The neck s-trap with quick-release plastics buckle on the end, convenient for your use. Includes three color calibrated reference cards. It helps you get correct white balance, or color balance, allowing the camera to compensate for the illuminant color in a scene. Specifications: Color: white+grey+black Material: plastics Card size: 85 * 55mm / 3.3 * 2.2in Package size: 100 * 60 * 20mm / 3.9 * 2.4 * 0.8in Package weight: 100g / 3.5ounce Packing List: 1 * Color Calibrated Reference Cards