The Square Filter Holder is made of aviation aluminum alloy by CNC-body processing, the surface is black sandblasted.
The connection between the aluminum holder and the camera lens is front side, the overall structure is arc-shaped, and the protruding portions on both sides are clips.
All nut parts of the bracket are made of copper and plated with black nickel, which is more durable and reduces the effect of stray light on imaging.
Fit for wide angel lens with focal lenght bigger than 18mm. This filter holder can only for filter with a width of 100mm and a thickness of 2mm,and could hold 2 filters.
With 8pcs filter adapter rings (includes 49mm, 52mm, 58mm, 62mm, 67mm, 72mm, 77mm and 82mm).