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| B + W 55mm Infrared #092 (RG695) Special Effects Filter for Olympus Evolt , E300 , E500 , E1 Lenses |
| Category: Hardware |
Date: 05-09-2005 |
What photographer wouldnt love to leave the beaten path and create pictures that stand out, fascinate, perhaps even take ones breath away? To show objects or landscapes as no eye would see them in nature is an irresistible challenge. B+W Infrared Filters can help you to take on this challenge and master it with perfection. B+W filters that transmit infrared light, but which block or severely limit the visible spectrum can reveal otherwise hidden worlds, when used in conjunction with appropriately sensitized films. Infrared photographs are attractive in many ways: Because of the nearly white reproduction of the chlorophyll green of vegetation, infrared black-and-white photographs render landscapes as if they were self illuminating, or immersed in an extraterrestrial light (the moonlight effect). Infrared color photographs have a fairy-tale effect because colors are reversed. The film renders highly infrared reflecting plants in orange to purple-red tones, while filters suppress the blue and green components that are also present. In any case, the pictorial results are difficult to predict, therefore they are always good for experimentation and surprises. The nearly opaque B+W Infrared Filter 092, which looks dark purplish red when held in front of a light source, blocks visible light up to 650 nm, and passes only 50 % of the radiation just below 700 nm (thus the dark red color). From 730 nm to 2000 nm, transmission is greater than 90 %. This makes photographs of pure red and infrared images possible with the best utilization of the relatively low sensitivity of infrared films. As the sensitization 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-and-white film. Its filter factor is 20 to 40. (Photograph by Ericka Van Horn) |
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