▣ Dark Frame comparison [EOS 350D(Rebel XT), EOS 5D , ASTRO 350D]
These were exposed continuously with 3min rest interval, 300sec -> 600sec ->900sec,and cropped from center of full size images.
http://www.centralds.net/cam/wp-content/uploads/2012/04/350d-dark.jpeg300600liyunhttp://www.centralds.net/cam/wp-content/uploads/2020/02/c-logo5.pngliyun2012-04-08 16:00:002012-04-26 17:39:26Long Time Dark Frames[EOS 350D(Rebel XT), EOS 5D , ASTRO 350D]