Description:This Focus Board has two sides, one is 18% gray, the other side is white.All gray, target "+" 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 "+" 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 shootsSpecification :Material: PU, could be cleaning with water, with a nylon carry caseSize: 30 x 30cm/12 x 12"Quantity: 1 PCPackage includes:1 x Focus Board with Gray/White Side1 x Carrying bag