1D長時間曝光測試

內容

oeyvind · #1 文章由 **oeyvind** » 05/11/2004 9:16 pm

1D long exposure test... 5 min 38 sec f/22 ISO 400 @ 16mm

B&W toning in PS

oeyvind · #2 文章由 **oeyvind** » 06/16/2004 2:20 pm

The same scene on EOS 30 and Kodak T400CN almost same settings

Film wins...

uiui · #3 文章由 **uiui** » 06/16/2004 2:34 pm

when shooting with long exposure, film always do much better than digital. maybe due to the dynamic range. correct me if wrong.

chester · #4 文章由 **chester** » 06/16/2004 3:15 pm

oeyvind 寫:The same scene on EOS 30 and Kodak T400CN almost same settings
Film wins...

Not exactly.

Film has a very special characteristic (or "feature") called reciprocity failure. It means that the longer you expose the film to light, the less it becomes sensitive to light. Different film has different reciprocity failure figure, usually it shows up when the exposure becomes longer than one second.

CCD or CMOS used in digital camera does not have this feature. That's why you get more exposure in CCD than in film with the same 5-min setting.

Chester