B&W 52mm 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.
| Type | UV Black |
| Size | 52mm |
| Grade | 403 |
| Filter Factor | 8-20 depending on film sensitivity |
| Multi-Coated | No |
| Rotating | No |
| Effect | Passes UV A radiation and blocks visible light |
| Application | Forensic and other specialized photography requiring specific UV filtration |
| Color Temperature | Not Applicable |
| Construction | Schott Glass |
| Front Filter Thread Size | 52mm |
| Front Lens Cap Size | 52mm |
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Comments about B+W 52mm UV Black (403) Filter:
I got what I expected. Good construction. I measured the transmission spectrum of this filter. Besides the UV peak between 320-380nm, there is a significant IR peak from 700-800 nm. So if you wish to take pure UV photo, watch out the contamination of IR light, which is strong in sunshine. Ideally used with dedicated UV light source.
Pros
Cons
Best Uses
Comments about B+W 52mm UV Black (403) Filter:
I use this filter with my Olympus 5050Z. I don't get true UV because I haven't modified the camera, but I am getting really interesting Infrared contamination.
With my Hoya R72, I only get black and white, or false color when I process it in in Photoshop. With the B+W 403, I get the infrared effects of white foliage, combined with blue sky and water. The contrast between the sky and water and the black and white of everything else makes a gorgeous photograph after tinkering a while in Photoshop. So far, the filter doesn't seem to work on my new Cannon Rebel XSI. It may be because I haven't experimented much yet, but not all cameras work with either UV or Infrared.
Check your camera for IR or UV sensitivity before buying one.
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