Anwenk 12x12 Inch (30x30cm) Grey Card White Balance Card for Photography 18% Exposure Gray Reflectance Reflector Foldable Focus Board Double Sided with Carry Pouch

Anwenk 12x12 Inch (30x30cm) Grey Card White Balance Card for Photography 18% Exposure Gray Reflectance Reflector Foldable Focus Board Double Sided with Carry Pouch

DGK Color Tools DKK 5" x 7" Set of 2 White Balance and Color Calibration Charts with 12% and 18% Gray - Includes Frame Stand and User Guide