This 77mm IR Black Red MRC Basic Filter #830/093 from B+W is a full intensity infrared filter that blocks the complete visible light spectrum, enabling image recording of the pure IR light range without visible red. The black and white contrasts are higher than those produced by dark-red IR filters.
The filter is made of precision German optical glass, each side featuring seven layers of Broadband coating for high contrast pictures with minimal residual reflection and uniform light transmission. The brass filter ring features an enhanced knurling pattern for improved grip and a special functional coating for smooth mounting and dismounting. The ring features front threads, and its low-profile design makes it suitable for use with wide-angle lenses.