B+W

Filters match illumination, enhance contrast and colours,
attenuate the amount of incoming light, make structures invisible
to human eyes visible to the camera, and offer numerous optical
effects for creative composition or abstractions.
The B+W filter manufacturing company
was founded in Berlin in 1947, merging with Schneider Optical Works
in 1985.
The merge led to significant progress in developing optical
technology and multi-layer coating systems. B+W became the first
filter manufacturer in the world to offer the innovative water and
dirt repelling, scratch resistant MRC multi-layer coating
process.

B+W uses the most modern fabrication machines to produce
incredibly precise filters in a variety of styles. Quality controls
are implemented at key stages of the production process and a final
inspection of each individual filter ensures B+W's renowned high
standard.
B+W filters will not only protect your lens, but enhance the
quality of your images.