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B&W 48mm UV Black (403) Filter - This filter should not be confused with a traditional "UV" filter. This specialized filter is opaque to the eye and passes UV A radiation from 320-385nm. It also blocks all visible light. When used with the appropriately sensitized film, it is especially effective when used in forensics or in certain flourescent photography.
The filter ring is made from brass yielding a stronger product. Brass filter rings are also less prone to jamming. In addition, the seal between the glass and filter ring is exceptionally strong giving the filter added strength and durability. The excellent Schott Glass used in the manufacturing of this filter is legendary and synonymous with the highest standards of filter production. It comes with a solid 10-year warranty.
Used with appropriately sensitized films in such applications as ultraviolet reflection photography in forensics or in materials research, but also as filters on UV-emitters for fluorescence photography
Depending on the illumination and on the film's sensitivity, it's filter factor is in the range of 8-20
In the Box
B+W 48mm UV Black (403) Filter
Table of Contents
8-20 depending on film sensitivity
Passes UV A radiation and blocks visible light
Forensic and other specialized photography requiring specific UV filtration