This UV Filter blocks the invisible UV component of light from the sky, which can cause blur and to which
many color films react with a blue cast. These filters should be called UV-Blocking Filters, because there
are filters for technical applications that pass UV radiation and block all the other wavelengths.

Nevertheless, the short term “UV Filter” has become established among photographers. UV Filters are ideal for
photography in high altitudes (in the mountains), by the sea and in regions with very clean air. The pictures
gain brilliance and disturbing blue casts are avoided. Because the glass is colorless, color rendition is not
altered, aside from the elimination of the unwanted blue cast, and no increase in exposure is required. That
makes a UV Filter very suitable as protection of the front element of the taking lens against dust, flying
sand, sea water spray and the like, and it can be kept on the lens at all times. It is recommended for analog
color and black-and-white as well as digital photography.


Multi-Resistant Coating (MRC)

MRC by B+W is not only an extraordinarily effective multiple layer coating, it is also harder than glass,
so that it protects filters from scratches (for instance when cleaning the filters), and it is also water
and dirt repellent, thus facilitating filter maintenance.


This filter uses our Slim-Line mount made of brass for wide angle lenses. They do not have a front accessory
thread to avoid vignetting with lenses as wide as 17mm in 35mm format. Some report success with lenses
as wide as 16mm. A slip on cap is supplied with Slim filters, sizes 49mm through 82mm.

The height is only 3mm. In the case of rotatable polarizing filters, the height is 5mm and made of aluminum.