Description: This Focus Board has two sides, one is 18% gray, the other side is white. All gray, target "and" mark and white surfaces of this focus board have their own function. Whatever you used in film or digital photography, the 18% gray side can control expose value, the white side can balance the color and the target "and" mark can provide accurate center photometric. This focus board helps to revert the color truly and perfectly by measuring the exposure value, white/gray balance value and color temperature. Provides a great advantage when working under pressure in events such as weddings or parades. It is the ideal accessory of the portrait, flower and conversion shoots Specification : Material: PU, could be cleaning with water, with a nylon carry case Size: 30 x 30cm/12 x 12" Quantity: 1 PC Package includes: 1 x Focus Board with Gray/White Side 1 x Carrying bag Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.