GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||||
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10:30 Jul 17, 2014 |
English to German translations [PRO] Tech/Engineering - Photography/Imaging (& Graphic Arts) / Dental Photography | |||||||
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| Selected response from: Yorkshireman Germany Local time: 00:22 | ||||||
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4 | Doppelpolfilter |
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Discussion entries: 1 | |
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Doppelpolfilter Explanation: Consists of two polarisation filters in one filter mount, one of which is rotatable. The removal of light polarised in one particular plane is particularly effective for removing reflections when shooting shiny surfaces/subjects (As can be seen in the examples). The advantage of a cross-polarizer/Doppelpolfilter as that the degree of removal can be adjusted from simple polarisation to complete filtering (i.e. no light at all is let through). This effect makes them useful for reducing light without the need for a neutral density (ND) filter or changing the lens aperture. The use of polarizers (Polfilter) in conjunction with polarised light is also useful for revealing stresses in materials or details that would otherwise remain invisible in normal light |
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