B+W 39mm IR Dark Red 092 Filter

Dedicated to infrared photography, the39mm IR Dark Red 092 FilterfromB+Wis a specialized filter for both digital and film photography. It has a nearly opaque, dark purple appearance when held to light, and is designed to block all visible spectrum light up to 650nm. To produce surreal effects, the 092 filter allows only 50% of light pass just below 700nm, and from 720-2000nm more than 90% of IR radiation passes. Since most infrared films are sensitive up to 1000nm, this transmitted red portion of the spectrum still affects the exposure. Due to the nature of infrared photography, the filter factor for this filter is highly variable and depends largely on your film sensitivity and lighting conditions.

This specialized filter is uncoated and uses high-quality Schott glass for its construction to maintain imaging integrity and optical clarity. It also features an F-Pro brass filter ring for durability as well as jamming prevention.