High-Performance Optics for a New 70mm Digital Cine Format
Autor: | Wilfried Bittner, Winston Ip, Dan Sasaki, Brian Caldwell |
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Rok vydání: | 2013 |
Předmět: | |
Zdroj: | SMPTE Motion Imaging Journal. 122:49-54 |
ISSN: | 2160-2492 1545-0279 |
DOI: | 10.5594/j18269 |
Popis: | This paper details technical features of the first series of high-speed prime lenses designed for a new 70mm digital format developed by Panavision. These new lenses offer full aperture (f/2.5) performance at or near the diffraction limit from near-ultraviolet to near-infrared over a 48 × 20.25mm image area. These lenses are also designed to work properly with optical filters inserted between the lens and sensor. Twelve focal lengths are under development, ranging from a 27mm ultrawide to a 300mm telephoto. In addition to traditional externally geared controls, all lenses have internal motors for focus and aperture. High-resolution metadata are transmitted continuously to the camera. Metadata include focus distance, aperture, temperature, and individual lens identification. A replaceable internal filter near the aperture stop permits a variety of creative effects, including soft-focus. |
Databáze: | OpenAIRE |
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