B+W UV 101
This light tinted filter reduces light transmission when there is too much light while using high-speed film. Filter factor is 2.

B+W 102
By using this filter, it is possible to use the relatively longer shutter speeds while retaining a wide aperture even in bright illumination. This allows for the emphasis of the subject by controlling depth of field or creating motion effect with subject blur. Filter factor is 4.

B+W 103
This filter is denser than 102 and more light absorbing. It is suited for video, especially when a small enough lens opening is not available. In addition, a specific depth of field limit can be obtained. Filter factor is 8.

B+W 106
This filter is especially useful when making extremely long exposures (several minutes). It is also suited for video. Filter factor is 64.

B+W 110
This filter is useful for the observation and documentation of industrial processes at high temperatures and light levels. This type of filter prevents strong flare and brings out interesting details. Filter factor is 1000.

B+W 113
This filter belongs in the realm of industrial processes and lunar astrophotography. Due to its high density, it allows for the long exposures which are necessary. Filter factor is 10,000.

B+W 120
This filter is especially made for observation and photography of the sun. Be cautioned, however, that direct observation of the sun through any filter is to be strictly avoided since long wavelength infrared radiation, which is harmful to the eye, is not blocked. Filter factor is 1,000,000.