Archived posting to the Leica Users Group, 2010/02/28
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Not necessarily. It can also mean more useable shadow detail providing greater dynamic range (DR) at optimized ISO ratings. Which is what I see when comparing 5D files with M8 and DMR files. Yet the 5D delivers better high ISO performance. I'm not aware of any CCD camera or back that can deliver the useable high ISO that current DSLR Cmos sensors do. Yet the CCDs deliver the micro detail and dynamic range better than the Cmos at low to medium ISO. As far as I know the astronomical and scientific applications continue to prefer using CCDs for their ability to record detail and DR. Regards, George Lottermoser george at imagist.com http://www.imagist.com http://www.imagist.com/blog http://www.linkedin.com/in/imagist On Mar 1, 2010, at 12:01 AM, Daniel Tan wrote: > Hmmmmm... > A better SNR implies better high iso characteristics... > > :Daniel > > On 1 March 2010 15:49, George Lottermoser <imagist3 at mac.com> wrote: > >> That is also my understanding Jayanand. >> CCD: >> Better S:N (signal to noise) characteristics. >> Greater dynamic range. >> Greater ability to render micro detail. >> More expensive to produce. >> Requires more processing power. >> >> Cmos: >> Higher ISO performance. >> On board processors resulting in less power usage. >> Lower Cost. >> >> >> Regards, >> George Lottermoser >> george at imagist.com >> http://www.imagist.com >> http://www.imagist.com/blog >> http://www.linkedin.com/in/imagist >> >> On Feb 28, 2010, at 9:17 PM, Jayanand Govindaraj wrote: >> >> If I remember right, CCD sensors have better noise >> characteristics than >>> CMOS >>> ones. The major advantages of CMOS sensors are considerably >>> lower power >>> usage and lower manufacturing costs. >>> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > > -- > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information