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Отдаляющие линзыhe use of a range extender, installed between a lens and a camera, will extend the focal length and increase the effective aperture (F/number) of a video lens. For example, using the 2XE range extender will extend the focal length by two times (2X) and double the effective aperture of the following lens: (2X) 50 mm, F/1.3 lens = 100 mm F/2.6
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Дизайн сайта: ADT Web Solutions |
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Программное обеспечение: RuSoft | ||
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