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| Heliopan 39mm UV Haze SH-PMC Filter 703911Heliopan 39mm UV Haze SH-PMC Filter Newegg.comDelivery: in USA Report | $62.23 |  | |
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| Heliopan 39mm Circular Polarizer Filter 703941Polarizing filters, are color neutral and increase picture taking possibilities with black and white or color film. In color... morephotography, unlike black and white photography, there is no possibility to change contrast or color saturation with colored filters. To do so would also change the colors in the photograph. Natural light spreads in a wave form in all direction. Sunlight is polarized and has a high color purity. When passing through the atmosphere a part of it is scattered, which results in a blush gray haze over all colors. This effect can be reduced or eliminated by using polarizing filters. If, in addition, light falls at an angle of approximately 35½ onto a reflecting surface, e g. water, glass, plastic, color surfaces, with the exception of metallic surfaces, the light becomes reflected and polarized. If one uses a properly orientated polarizing filter, the reflections are absorbed and the true colors can reach the film. Water surfaces become transparent and clouds are more saturated.The light loss of a polarizing filter varies between 1 and 1.5 F stops which, depending on camera type, can be manually or automatically corrected. HELIOPAN polarizing filters consist of a neutral color foil cemented between two plane parallel glass discs. The foil is constructed so that light rays can only pass in one plane. The polarizing filter is mounted in a calibrated rotating ring so the desired position and effect can be easily set. With an SLR one sees the result in the finder, with viewfinder type cameras one holds the polarizer in front of the eye and turns it to see the desired effect. Then with the assistance of the calibrated rim, which is on every HELIOPAN polarizing filter, it is easy to set the filter to the same position on the lens. If no effect is visible, the available light conditions can not be polarized. In this case its use is not advisable.In principle there are two different kinds of polarizer's, linear and circular. The circular is required with camera systems where the built-in light measuring system uses light that has passed through the mirror via a beam splitter. In this case the light is already partially polarized, on all AF-cameras. Using linear polarizing filters cause in correct focusing measurements. The circular polarizer has a second component, a 1/4 wave plate in its construction. The polarized light is set in rotation by this plate and can therefore pass without interruption through the measuring system and give proper measurements.Ci Adorama.comDelivery: in USA On order Report | $74.95 |  | |
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| Heliopan 39 mm UV (Haze) Glass Filter 703901Heliopan 39 mm UV (Haze) Glass Filter Newegg.comDelivery: in USA Report | $41.49 | | |
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| Heliopan 39mm Circular Polarizer SH-PMC Filter 703946The Heliopan 39mm Circular Polarizing SH-PMC Filter is a high-quality, professional-gr Adorama.comDelivery: in USA On order Report | $102.48 | | |
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| Heliopan 39mm Slim Mount Wide Angle Polarizer Filter 703980Under the right conditions, the 39mm Slim Mount Wide Angle Circular Polarizer Filter can significantly enhance your photograp... morehy experience. This filter, which is color neutral, broadens the scope of possibilities for both black and white and color film photography. Unlike in black and white photography, color photography doesn't allow for contrast or color saturation adjustments using colored filters, as this would alter the colors in the photo. However, this polarizing filter can help manage these aspects. Natural light, which spreads in all directions in a wave form, is polarized and possesses high color purity. As it passes through the atmosphere, some of it scatters, resulting in a blush gray haze over all colors. This effect can be minimized or even eliminated with the use of our polarizing filters.Moreove Adorama.comDelivery: in USA On order Report | $74.95 | | |
