... and image quality. But it will also protects the front barrel from the inevitable impacts against walls, door frames, and other ... keeping moisture or wind-blown debris off the lens. Size:25mm,27mm,28mm,30mm,30.5mm,37mm,43mm,46mm,49mm,52mm ... ,55mm,58mm digital video camera lens hood 25mm,27mm,28mm,30mm,30.5mm,37mm,43mm,46mm,49mm,52mm ...