The B&W 37mm Infrared Dark Red (092 = 89B) Filter is nearly opaque. It looks dark purplish/red when held in front of a light source and blocks visible light up to 650nm. It passes only 50% of the radiation just below 700nm (thus the dark red color).
| Tipo | Infravermelho |
| Tamanho | 37mm |
| Grade | 092 (equivalent to an 89B filter) |
| Fator de Filtro | 20-40 dependendo da sensibilidade do filme |
| Multirrevestido | Não se Aplica |
| Giratório | Não se Aplica |
| Effect | Blocks visible light up to 650nm |
| Aplicação | Fotografia Infravermelha |
| Temperatura de Cor | Não especificado pelo fabricante |
| Construção | Vidro Schott |
| Tamanho da Rosca do Filtro Frontal | 37mm |
| Tamanho da Tampa da Lente Frontal | 37mm |
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Comments about B+W 37mm Infrared Dark Red 092 Filter:
More Infrared filter than I thought
I thought I was getting a Deep Dark Red Filter
It virtually Black Filter Like My Hoya R72 Infrared Filter
Very Happy
Pros
Cons
Best Uses
Comments about B+W 37mm Infrared Dark Red 092 Filter:
I purchased this to have as an alternative to completely visually black R760 IR filter. The 092 does allow a small amount of visible red through and gathers a lot more light permitting a lower noise exposure. Having a range of IR filters permits greater flexibility.
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