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.
