The B&W 46mm 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).
| Type | Infrared |
| Size | 46mm |
| Grade | 092 (equivalent to an 89B filter) |
| Filter Factor | 20-40 depending on sensitivity of film |
| Multi-Coated | Not Applicable |
| Rotating | Not Applicable |
| Effect | Blocks visible light up to 650nm |
| Application | Infrared photography |
| Color Temperature | Not Specified by Manufacturer |
| Construction | Schott Glass |
| Front Filter Thread Size | 46mm |
| Front Lens Cap Size | 46mm |
Reviewed by 1 customer
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Comments about B+W 46mm Infrared Dark Red 092 Filter:
great quality filter form B & W as expected.
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