On Sat, 5 Jan 2002 20:55:27 +0100, Jostein wrote: >"Dynamic range" is how many "f-stops" it can separate between shadows >and highlights. More would be better, I guess...
Close, but no cigar :-) It IS the range between maximum shadows and highlights recordable, but it is a decimal logarithmic (log-10) not log-2 like an f-stop is. So simpler put, an f-stop difference is a factor 2, one unit in dynamic-range is a factor of 10, so a little more than 3 f-stops. Negative/slide scanners are in the order of a dynamic range of 3, so about 10 f-stops. Regards, JvW --------------------------------------------------------- Jan van Wijk; www.fsys.demon.nl - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
