with battery door system for changing battery without remove the case
0.3-1.8 Variable Neutral Density FilterIncrease Exposure by 1 to 6 StopsBrass Ring ConstructionHigh Quality Schott Glass
0.3-1.8 Variable Neutral Density FilterIncrease Exposure by 1 to 6 StopsBrass Ring ConstructionHigh Quality Schott Glass