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Nelspruit, 1200
South Africa
Tel: +27 13 7533474
Fax: +27 13 7525199
Cellular: +27 824602139
info@wholesaledigital.co.za
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P.O Box 2986 Nelspruit, 1200 South Africa Tel: +27 13 7533474 Fax: +27 13 7525199 Cellular: +27 824602139 info@wholesaledigital.co.za |
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UV, ND, PL And CPL Filters:These filters, manufactured from the finest optical glass, are ground and polished to
the most practical thinness. In addition, they are heat treated to avoid any distortion or
focal shift, and each filter is subject to strict tests in order to ensure a perfect and
even surface which is essential to a good filter. Because of the high quality of these
filters, they carry a 15 year guarantee. UV Filters:UV Filters absorb ultra-violet rays without increase of exposure, thereby preventing haziness and foggy effects in distant landscapes and create clearness in pictures. Constant use of this filter is recommended for clearer pictures as well as a lens protector. Polarizer Filters:Polarizer filters removes or reduces reflections from non-metallic surfaces, darkens blue sky while increasing colour saturation. One simply rotates the filter in it's mount until the optimum effect is obtained. Normally used with manual focus lenses, but they work fine on most consumer digital cameras.
Circular Polarizer Filters:Polarizer filters removes or reduces reflections from non-metallic surfaces, darkens blue sky while increasing colour saturation. One simply rotates the filter in it's mount until the optimum effect is obtained. Circular Polarizer filters are normally used with all auto focus 35mm lenses.
Neutral Density Filters:In photography and optics, a neutral density filter or ND filter is a "grey" filter. An ideal neutral density filter reduces light of all wavelengths or colors equally. The purpose of standard photographic neutral density filters is to allow the photographer greater flexibility to change the aperture or exposure time, allowing for more control, particularly in extreme circumstances. For example, on a very bright day, one might wish to photograph a waterfall at a slow shutter speed to create a deliberate motion blur effect. In order to do this, one would need a shutter speed on the order of tenths of a second. There might be so much light that even at minimum film speed and a minimum aperture such as f/32, the corresponding shutter speed would still be too fast. In this situation, by applying an appropriate neutral density filter one or more stops can be taken out of the exposure, allowing a slow shutter speed and more pleasing effect. Alternatively one can use a wider aperture to narrow the plane of focus and make the subject stand out from a blurred background.
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