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旧 2002-11-26, 17:26   第 1 楼  
lzq离线中 No1 lzq 帅哥
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有发现 [转贴] 适用于天文摄影的胶卷

      原文来自 http://www.darkskyimages.com/films.htm (Dark Sky Images网站,有很多天文摄影知识和经验)
      
      推荐的胶卷:
      1、Kodak Ektachrome E200 -- Slide film. Great red sensitivity. Good for nebulae. Very slow.
      2、Kodak Elite Chrome 200 --Consumer version of E200. Basically the same but doesn't have to be refrigerated.
      3、Fuji NPH 400 Print film. -- Great blue sensitivity, not bad in red. Great for galaxies, good all-around film.
      4、Fuji Superia 800 X-TRA --Print film. Great red sensitivity, not bad in blue. Good beginner film, picks up stuff fast. Grainier than "slower" films.
      5、Fuji Provia 400F --Slide film. Many astrophotographers have begun using this film. I have not personally tested it for astrophotos, but the results from others look great. Have used as a daylight film and it is very fine-grained and neutral color-balanced
      
      已停产或换代的胶卷:
      1、Kodak Pro 400 (PPF) --Great astro film. Replaced with Portra 400, which is not a great astro film.
      2、Kodak PJ400 --Discontinued March, 2000. Replaced with Supra 400, which is not as good for astro.
      3、Fuji Superia 400 --Reformulated as Superia 400 Xtra. No red sensitivity.
      
      不建议使用的胶卷:
      1、Kodak Portra 400 VC --Replacement for PPF 400. Very little red sensitivity.
      2、Kodak Supra 400 --Replacement for PJ400. Very low recording power.
      3、Fuji Superia 400 (Xtra) --Replaces old Superia 400. Has no red sensitivity.
      
      在够黑暗的地方的曝光时间(参考)
      Kodak PPF400: 60-75 minutes at f/7
      Kodak E200: 75-90 minutes at f/7
      Kodak PJ400: 60 minutes at f/7, 100 minutes at f/10
      Kodak E100VS: 60 minutes at f/5.6
      Fuji Superia 800: 10 minutes at f/2.8, 60 minutes at f/8
      Fuji NPH400: 60-75 minutes at f/7
      
      各位可以参考一下

 
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