B+W
The B+W filter manufacturing company was found- ed in Berlin in 1947 by business partners Biermann and Weber. In 1985 the merger with the Jos. Schnei- der Optical Works in Bad Kreuznach expanded the B+W line of products with optical filters for science and technology. It also generated significant progress in multi-layer coating systems (MC). As a result, B+W became the first manufacturer of filters in the world to offer the innovative water- and dirt repel- ling MRC multi-layer coating process, which, in addi- tion to its reflection-preventing qualities is also re- garded as being especially scratch-resistant.Filters solve a great variety of tasks in photography. They match the illumination to the type of color film; they enhance contrast and colors; they attenu- ate the amount of incoming light; they can make the structures invisible to our eyes visible to the film; and they offer numerous optical effects for creative composition or for abstractions. Filters make it pos- sible to achieve photographs that simply could not be made without them, and many of them could not be accomplished with subsequent digital image manipulation! The same applies to direct digital photography. B+W therefore provides digital imag- ing filters in diameters and designs suitable for lens- es on most current digital cameras and camcorders.
In order to deliver optimal image quality and to safeguard the high demands of lens/camera manu- facturers, B+W glass filters are manufactured virtu- ally exclusively from glass supplied by the German Schott Group.
Constant quality controls during manufacturing and an obligatory final inspection of every filter before it is sent to distribution assure the re- nowned high quality standard – The term ”Guarantee“ is taken very seri- ously at B+W. A supposedly attractively inexpensive filter, on the other hand, can easily degrade the good imaging performance of a lens. Image quality really does already begin before the lens!
Not only the high optical performance is important to measure the quality of a filter. Important as well are material and quality of production of the filter holder. This is why B+W in production only uses metal, precisely turned on CNC-controlled machines, almost without production tolerances. The solid metal holder as well as the precise screw thread are guarantee for a long filter life.
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