Haida Wide Angle Variable Neutral Density Filters is made ofspecial selected optical material, by rotating the frame, thedensity could be easily adjusted from ND2 (ND0.3) to ND1000(ND3.0).The premium special neutral optical material guarantee nocolor cast would occur when adjusting. Original wide angle designjust acts as the same effect as the ultra slim filter frame toeliminate "ghosting".

The upside part of frame is made of premium alloy material withspecial non-reflection treatment, the under part is in bright dark.The whole filter looks so kingly. The special processing techniquesguarantee the steady rotating function in any temperatures from-40??? to 80???.

Warmly remind you that because of physical properties and lightchanges in different circumstances,sometimes slight crossbar shadowmay occur, please decrease the neutral density till it disappear,then taking pictures.