Fotodiox Pro 6.6"x8.5" filters are the strongest in the industry at 4mm thick. Fotodiox 6.6x8.5" filters are practically unbreakable and are assured spectrally neutral to within + or “ 3 in the a and b channels of the lab Color: space. Reverse grad filters are primarily used for light reduction in skylines of landscape shots. The reverse grad is a vital tool if you are looking to take sunrise or sunset shots. This is because the ND part of the grad is upside down, with the darkest area is near the center, graduating to approximately one f-stop lighter on the top part of the filter and the lower part of the filter is clear to allow balanced exposure with the foreground. This ensures the maximum light reduction when the sun is at or near the horizon. This filter is made by Fotodiox Pro specifically for the WonderPana 66 & FreeArc Systems.
Features- Premium grade optical polycarbonate (CR39) filter
- High quality, super thick, reverse gradient filter
- Clear in the bottom half of the filter with a gradual transition to the ND effect in the top half
- A vital tool if you are looking to take sunrise or sunset shots
- 24-Month Warranty
Includes:- 6.6x8.5" Filter with Carrying Pouch
Specifications- Size: 6.6 x 8.5 in.
- Handle: 6X8-Revgrad-Nd-0-6Se
- Dimensions: 168mm x 216mm x 4mm (6.6" x 8.5" x 0.16")
- Construstion: Premium Grade Optical Polycarbonate (CR39)
- Warranty: 24 Months
- Weight: 454 g