B + W for diameter 67mm F-Pro702 gray 25% MRC

The B + W F-Pro 702 MRC grey transition filter is made of highly transparent Schott glass. The gray transition is applied to one side of the filter by the same technology as anti-reflective coatings. By combining the vapors of different metals in the vacuum, the gradually receding gray layer is achieved. The glass is mounted in a brass frame F-PRO to ensure a smooth rotation of the filter. The B + W 702 MRC filters only 25% light (-2 aperture numbers) in its darkest place.
 
Gray transition filters are almost indispensable for landscape photography, where they balance the large light differences of the scanned scene This problem arises mainly with digital sensors that do not have such exposure flexibility as a film negative. MRC layers provide high light transmission (more than 99%) and prevent the light reflected from the digital sensor to return to the optical system and create ghosting. The last layer protects the filter against scratching and makes it easier to clean. Thanks to the MRC surface antireflection treatment, two B + W transition filters can also be used at one time.
 
Parameters and Specifications:
Surface Treatment: MRC (Multilayer Coating)
Thread diameter: 67mm
Permeability: 25% light (-2 apertured numbers)