The B+W 58mm Close-Up +3 (NL3) Filter provides a near-focusing distance that begins at 33cm (13 inches) from the front rim, regardless of the focal length of the main lens. When close-ups have to be taken because of the wide-angle effect of a 35mm lens, the NL 3 close-up lens is ideal for a seamless extension of the normal close-up range up to Approx. 1:5.5. ...

The B+W 58mm Close-Up +4 (NL4) Filter is the right power for closer focusing with a 50mm lens (up to Approx. 1:3) when you have reached the limit with the NL 2 lens. With 85mm (up to Approx. 1:2.1) & 100mm (up to Approx. 1:1.9) telephoto lenses, it is the highest power, & it should be used with the main lens stopped down to at least f/8. ...

The B+W 58mm Close-Up +5 (NL5) Filter serves for the seamless extension of the range provided by the NL 3 close-up lens on a 35mm main lens (up to Approx. 1:3.5). If you can tolerate a small gap after the NL 2 close-up lens on a 50mm main lens (approximately 1:4.4 to 1:4), then you enter a little further into the macro range with the NL 5 instead of the NL 4 (up to Approx. 1:2.6). ...

The B+W 58mm Dark Red (091) Filter even darkens the reds near the yellow tones in the spectrum, as its transparency only begins in the orange-red region. It produces dramatic effects & extreme tonal separation for graphic effects & high contrast. That accounts for the large filter factor of appr. 8. ...

The B+W 58mm Dark Red (092) Infrared Filter, which looks dark purplish red when held in front of a light source, blocks visible light up to 650 nm & passes only 50% of the radiation just below 700 nm (thus the dark red colour). From 730 nm to 2000 nm, transmission is greater than 90%. This makes photographs of pure red & infrared images possible with the best utilisation of the relatively low sensitivity of infrared films. As the sensitisation of infrared black-&-white films barely extends beyond 1000 nm, the red portion that is transmitted still makes a relevant contribution to the exposure. That is why this filter is the preferred filter for pictorial photography on IR black-&-white film. Its filter factor is 20 to 40. ...

The B+W 58mm F-Pro HTC Kaesemann MRC Circular Polarising Filter is a high-transmission filter for lenses with a filter thread diameter of 58mm. This filter provides all of the benefits of a polarising filter Â- reflection reduction, richer colours, & greater control of depth-of-field & shutter speed. An MRC nano coating also protects the glass element from water damage. ...

The B+W 58mm Kasemann MRC Circular Polariser Filter increases colour saturation & reduces reflections. Circular polarizing filters are made for all cameras with beam splitters in the light paths of their TTL exposure meter & with autofocus lenses. Circular polarization has the same pictorial effect as linear polarization, but allows for proper exposure metering and/or autofocus distance settings. ...

The B+W 58mm KR-1.5 Skylight Filter is a delicate reddish-yellow conversion filter that absorbs violet & some blue plus a minimal amount of green, but it passes yellow & red undiminished; the colour of the light becomes “warmer” by 15 Mired. That is mostly the optimal amount for correcting the light blue cast in the shadows under a blue sky. It also absorbs UV radiation & hence it provides better sharpness. With colour films and/or developing processes that generally yield results that are too “cool, this filter can be kept on the lens at all times. With this filter, skin tones in particular will be rendered more naturally. ...

The B+W 58mm KR-1.5 Skylight Filter is a delicate reddish-yellow conversion filter that absorbs violet & some blue plus a minimal amount of green, but it passes yellow & red undiminished; the colour of the light becomes &8220;warmer” by 15 Mired. That is mostly the optimal amount for correcting the light blue cast in the shadows under a blue sky. It also absorbs UV radiation & hence it provides better sharpness. With colour films and/or developing processes that generally yield results that are too &8220;cool, " this filter can be kept on the lens at all times. With this filter, skin tones in particular will be rendered more naturally. ...

Folding rubber lens hoods are very compact & do not take up much room in a photographer's bag. A mattblack groove structure prevents inner reflections & the elastic material provides good protection against jolts. The length & opening angle of Model 900 is matched to standard or short zoom lenses. ...