B+W 43mm Infrared Dark Red 092 Filter
The B&W 43mm 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).
- From 730 to 2000nm, transmission is greater than 90%; this makes photographs of pure red and infrared images possible with the best utilization of the relatively low sensitivity of infrared films
- As the sensitization of infrared black and white films barely extends beyond 1000 nm, the red portion that is transmitted still makes a relevant contribution to the exposure; that is why this filter is the preferred filter for pictorial photography on IR black and white film
| Type | Infrared |
| Size | 43mm |
| 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 | 43mm |
| Front Lens Cap Size | 43mm |
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Reviewed by 2 customers
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Comments about B+W 43mm Infrared Dark Red 092 Filter:
I use a Zeiss Ikon Range finder which doesn't need TTL focusing. Filter works well with the Ilford film and has a 2 to 3 stop correction, effectively an ISO 25 rating for SFX 200 film.
Displaying reviews 1-2
Filter pouch
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- Original: $9.95
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Care & Cleaning
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- Original: $4.99
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- Ten-Year Warranty
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