18% grey card

60x60cm 2 In 1 Camera Double Face 18% Reflector Two Sides Grey/White Balance Card Focus Board

White Black 18% Gray Color Balance Cards Digital Grey Card with Neck-Strap DSLR Camera White

Portable Grey Card White Balance Card 18% Exposure Photography Card Custom Calibration Camera Checker Video for Digital DSLR

25*20CM Large Size White Balance Card White Card + Grey Card Set 18% Exposure Photography Card for

60cm / 24" Foldable Grey/White Balance 18% Grey Gray Reference Reflector Card with Carrying Bag

Pocket-Size Digital Grey White Black Gray Balance Cards 18% Digital Gray Card for Digital Camera

60x60cm 2 In 1 Double Face Camera Two Sides Focus Board 18% Reflector Grey/White Balance Card

Grey Card White Balance White Balance Card Set 3 In 1 18% Digital Photography Exposure Color Balance Card Set Gray/White/Black