BW gray filters are available in a number of values 1 2 3 6 & 10 f-stops & permit wide aperture even when it is very bright for low depth of field & an interplay of sharpness & blur andor long exposure times for motion blur or wiping effects speed emphasis or flow of water. They also permit normal time values & f-stop values when the film sensitivity is too high for the prevailing light. Gray filters with higher density 3 to 0 f-stops are also used for technical photography e. g. shots of lit lamp filaments of combustion processes & procedures in melting ovens as well as for astrophotography. br STRONGCAUTIONSTRONG These filters must not be used for the direct visual observation of the sun they can cause severe burn to the retina up to total blindness since they transmit too much infrared for this purpose special dielectric solar filters & Astro Solar Film are available for this. Why BW over other filter brands. BW filters have been made with Schott glass which guarantees the very highest glass quality. Good quality cameras & lenses are a major investment & at BW we believe that if you should have the best quality filters. Theres no point in buying an expensive optically superior lens only to put a piece of inferior glass over the front of it BW filters are also coated with state of the art coatings BW are the first filter manufacturer in the world to offer multi resistant coatings MRC. The coatings are extremely low-reflective & highly resistant to scratching but above all the unique dirt & water-repellent surface makes cleaning the filters easier. BW filters all feature brass mounts designed to fix the high-quality filter glass in position for life. Brass mounts wont bind with your lens thread or other filters a major advantage over cheaper filters. Extra-Slim Mounting Rings that Eliminate Problems Associated with SLR Wide-angle & Telephoto Imaging The BW standard filter mount F-Pro provides some substantial enhancements over the previous BW sta ...

BW 486 UVIR MRC SH 55mm Ultraviolet Infrared Cut Filter. b The colours appear more naturalb Further positive characteristics are greater detail three-dimensional quality & finer colour gradation. b Ultimate Clear Protectionb The BW 486 UVIR Filter has a completely colourless glass carrier coated with a number of extremely thin partially reflecting layers with precisely computed thicknesses. It is completely clear & it requires no increase in exposure. Its filter factor is 1. b How does the clever BW 486 UV-IR barrier filter workb More than 30 interference coatings are vapor deposited on one side while the opposite side is MRC-coated. The steep rising edge of the BW 486 ensures that all UV radiation is filtered out while rays in the visible wavelength range can pass through almost completely. The steep falling edge at the transition to the near infrared range blocks interfering long wave radiation. on a graph. b Multi-Resistant Coating
- Harder than Glassb BMRC Multi-Resistant Coating by BW 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 & it is also water & dirt repellent thus facilitating filter maintenance. b Not suitable for lenses wider than 35mmb The BW 486 UVIR filter is not suitable for lenses with an angle of view of more than 60 because the thin layer technology will lead to a change in light colour towards blue.
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BW 486 UVIR MRC SH 62mm Ultraviolet Infrared Cut Filter. b The colours appear more naturalb Further positive characteristics are greater detail three-dimensional quality & finer colour gradation. b Ultimate Clear Protectionb The BW 486 UVIR Filter has a completely colourless glass carrier coated with a number of extremely thin partially reflecting layers with precisely computed thicknesses. It is completely clear & it requires no increase in exposure. Its filter factor is 1. b How does the clever BW 486 UV-IR barrier filter workb More than 30 interference coatings are vapor deposited on one side while the opposite side is MRC-coated. The steep rising edge of the BW 486 ensures that all UV radiation is filtered out while rays in the visible wavelength range can pass through almost completely. The steep falling edge at the transition to the near infrared range blocks interfering long wave radiation. on a graph. b Multi-Resistant Coating
- Harder than Glassb BMRC Multi-Resistant Coating by BW 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 & it is also water & dirt repellent thus facilitating filter maintenance. b Not suitable for lenses wider than 35mmb The BW 486 UVIR filter is not suitable for lenses with an angle of view of more than 60 because the thin layer technology will lead to a change in light colour towards blue.
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BW 486 UVIR MRC SH 67mm Ultraviolet Infrared Cut Filter. b The colours appear more naturalb Further positive characteristics are greater detail three-dimensional quality & finer colour gradation. b Ultimate Clear Protectionb The BW 486 UVIR Filter has a completely colourless glass carrier coated with a number of extremely thin partially reflecting layers with precisely computed thicknesses. It is completely clear & it requires no increase in exposure. Its filter factor is 1. b How does the clever BW 486 UV-IR barrier filter workb More than 30 interference coatings are vapor deposited on one side while the opposite side is MRC-coated. The steep rising edge of the BW 486 ensures that all UV radiation is filtered out while rays in the visible wavelength range can pass through almost completely. The steep falling edge at the transition to the near infrared range blocks interfering long wave radiation. on a graph. b Multi-Resistant Coating
- Harder than Glassb BMRC Multi-Resistant Coating by BW 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 & it is also water & dirt repellent thus facilitating filter maintenance. b Not suitable for lenses wider than 35mmb The BW 486 UVIR filter is not suitable for lenses with an angle of view of more than 60 because the thin layer technology will lead to a change in light colour towards blue.
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BW 486 UVIR MRC SH 72mm Ultraviolet Infrared Cut Filter. b The colours appear more naturalb Further positive characteristics are greater detail three-dimensional quality & finer colour gradation. b Ultimate Clear Protectionb The BW 486 UVIR Filter has a completely colourless glass carrier coated with a number of extremely thin partially reflecting layers with precisely computed thicknesses. It is completely clear & it requires no increase in exposure. Its filter factor is 1. b How does the clever BW 486 UV-IR barrier filter workb More than 30 interference coatings are vapor deposited on one side while the opposite side is MRC-coated. The steep rising edge of the BW 486 ensures that all UV radiation is filtered out while rays in the visible wavelength range can pass through almost completely. The steep falling edge at the transition to the near infrared range blocks interfering long wave radiation. on a graph. b Multi-Resistant Coating
- Harder than Glassb BMRC Multi-Resistant Coating by BW 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 & it is also water & dirt repellent thus facilitating filter maintenance. b Not suitable for lenses wider than 35mmb The BW 486 UVIR filter is not suitable for lenses with an angle of view of more than 60 because the thin layer technology will lead to a change in light colour towards blue.
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BW Ksemann circular polarizers are manufactured with a polarizing foil of extremely strict & exacting specifications. In terms of color neutrality & extinction capability the foil quality is ideal. Furthermore the glass used for this filter is sanded & fine-polished for excellent optical quality & the advanced cementing technique prevents delamination in environments of high humidity. This filter does not impair the image sharpness of high-quality photographic lenses which is particularly important in high-resolution digital cameras & aspherical tele lenses. BW MRC nano Nanotechnology with Lotus Effect. Both sides of the BW MRC nano coated filters feature the same high-quality MC layer with 7 layers that is used in the MRC coating. This ensures high transmittance & maximum elimination of reflections by minimising reflection losses. Because the normal 4 reflection losses at the surface of the glass are reduced to an average of well below 0. 5 with an MC layer brighter colors & higher contrasts can be achieved. The MRC nano outer layer is an innovative extra layer that significantly outperforms the dirt- & water-repellent effect of the well-known BW MRC coating. Thanks to the nanotechnology-based surface property lotus effect dirt can hardly adhere. Water experiences a very efficient beading effect & virtually rolls off the surface of the glass. Cleaning the filter is incredibly easy & fast. In addition the superhydrophobic surface reduces fogging. After moving from cold to warm surroundings the condensation disappears from the surface of the filter glass within seconds. Why BW over other filter brands. BW filters have been made with Schott glass which guarantees the very highest glass quality. Good quality cameras & lenses are a major investment & at BW we believe that if you should have the best quality filters. Theres no point in buying an expensive optically superior lens only to put a piece of inferior glass over the front of it BW filters are ...

The BW 52mm XS-Pro Digital ND Vario MRC nano Filter is a solid variable neutral density filter providing an exposure reduction of 1 to 5 stops. The 0. 3 to 1. 5 density creates a darkening of the entire image allowing you to photograph with a wider aperture or slower shutter speed than normally required. The degree of density is easily controlled by rotating the front filter ring allowing you to previsualize the additional exposure length required. By slowing your exposure time or increasing your aperture you are able to control depth of field & convey movement more easily. For easier repeatable control over density settings the front ring is also visually demarcated with dots that represent different density values. The Multi-Resistant Coating MRC is both an anti-reflection coating as well as a protective surface. It helps to increase light transmission by reducing reflections scattered light & ghosting. in addition it offers greater protection to the filter substrate & stays cleaner for longer than uncoated filters. The nano coating associated with XS-Pro filters incorporates an additional 8th layer over the regular MRC & results in a better beading effect with water for greater cleaning efficiency. BW filters are constructed from high quality Schott glass for increased optical clarity & color fidelity. This filter features a thin oversized mount which helps to reduce the likelihood to vignetting when used with wide-angle lenses. The filter ring is made from brass for durability as well as jamming prevention. ...

BW 58mm AUC MRC Kasemann Circular Polariser Filter. The high-end polarising foils of the Kasemann-type filters are neutral in colour they have a higher efficiency than conventional polarising foils & they are cemented between high-grade plano-parallel optical glass. The resulting sandwich is then precision-polished again to achieve highly accurate plano-parallel surfaces. Subsequently they are edge-sealed to protect the foil against humidity. Brass mounts made on CNC-controlled machines ensure precise seating on the lens. Discriminating photographers regard the BW Kasemann-Type Polarising Filter to be the very best of all polarising filters. They are well suited for applications that require the highest possible imaging quality especially with high-speed telephoto lenses & apochromatic lenses. Why BW over other filter brands. BW filters have been made with Schott glass which guarantees the very highest glass quality. Good quality cameras & lenses are a major investment & at BW we believe that if you should have the best quality filters. Theres no point in buying an expensive optically superior lens only to put a piece of inferior glass over the front of it BW filters are also coated with state of the art coatings BW are the first filter manufacturer in the world to offer multi resistant coatings MRC. The coatings are extremely low-reflective & highly resistant to scratching but above all the unique dirt & water-repellent surface makes cleaning the filters easier. BW filters all feature brass mounts designed to fix the high-quality filter glass in position for life. Brass mounts wont bind with your lens thread or other filters a major advantage over cheaper filters. ...

For this high-end polarizing filter the foil pieces are selected individually for maximum color neutrality. Following cementing between high-grade optical glass additional grinding & polishing takes place. This guarantees outstanding sharpness even with very bright apochromatic lenses. The latest cementing technique ensures lasting stability even in damp climates. The new generation of Ksemann High Transmission HTC polarizing filters is fitted with a new polarizing foil which has higher translucency transmission. The BW filter XS-Pro is coated with MRC nano & F-Pro with MRC coating. Why BW over other filter brands. BW filters have been made with Schott glass which guarantees the very highest glass quality. Good quality cameras & lenses are a major investment & at BW we believe that if you should have the best quality filters. Theres no point in buying an expensive optically superior lens only to put a piece of inferior glass over the front of it BW filters are also coated with state of the art coatings BW are the first filter manufacturer in the world to offer multi resistant coatings MRC. The coatings are extremely low-reflective & highly resistant to scratching but above all the unique dirt & water-repellent surface makes cleaning the filters easier. BW filters all feature brass mounts designed to fix the high-quality filter glass in position for life. Brass mounts wont bind with your lens thread or other filters a major advantage over cheaper filters. ...

BW Ksemann circular polarizers are manufactured with a polarizing foil of extremely strict & exacting specifications. In terms of color neutrality & extinction capability the foil quality is ideal. Furthermore the glass used for this filter is sanded & fine-polished for excellent optical quality & the advanced cementing technique prevents delamination in environments of high humidity. This filter does not impair the image sharpness of high-quality photographic lenses which is particularly important in high-resolution digital cameras & aspherical tele lenses. BW MRC nano Nanotechnology with Lotus Effect. Both sides of the BW MRC nano coated filters feature the same high-quality MC layer with 7 layers that is used in the MRC coating. This ensures high transmittance & maximum elimination of reflections by minimising reflection losses. Because the normal 4 reflection losses at the surface of the glass are reduced to an average of well below 0. 5 with an MC layer brighter colors & higher contrasts can be achieved. The MRC nano outer layer is an innovative extra layer that significantly outperforms the dirt- & water-repellent effect of the well-known BW MRC coating. Thanks to the nanotechnology-based surface property lotus effect dirt can hardly adhere. Water experiences a very efficient beading effect & virtually rolls off the surface of the glass. Cleaning the filter is incredibly easy & fast. In addition the superhydrophobic surface reduces fogging. After moving from cold to warm surroundings the condensation disappears from the surface of the filter glass within seconds. Why BW over other filter brands. BW filters have been made with Schott glass which guarantees the very highest glass quality. Good quality cameras & lenses are a major investment & at BW we believe that if you should have the best quality filters. Theres no point in buying an expensive optically superior lens only to put a piece of inferior glass over the front of it BW filters are ...