This B+W F-Pro UV Haze MRC 010M Filter blocks the invisible UV component of light from the sky, which can cause blur and to which many colour films react with a blue cast. This B+W UV filter is 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 used in the B+W F-Pro UV is colourless, colour rendition is not altered, aside from the elimination of the unwanted blue cast, and no increase in exposure is required. That makes this 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 colour 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.
Brass Filter Mount
This filter uses the standard B+W F-Pro filter mount, which has a front accessory thread and is made of brass. The F-Pro mount can be used with wide angle lenses, including most 24mm focal lengths on a full frame body, without vignetting. Another advantage of the F-Pro mount is it's modified retaining ring, which is no longer threaded in from the front, but holds the filter glass in place from the back. When removing a filter or lens hood that has been screwed on too tight to the filter, the retaining ring is not at risk of loosening.