Color Calibration Balance Cards 3 In 1 White Black Grey 18-degree

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.
For optimum color correction: 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 strap with quick-release plastic buckle on the end, convenient for your use.

Specifications:
Item size: 85 * 54mm / 3.4 * 2.2in
Color: Black/White/Grey
Package weight: 34g / 1.21oz