On 1 Oct 2005 at 16:16, DagT wrote: > You still dont get it. The oversampling is good for removing > information that the algorithms put there because they give frequency > components that results from the pixel pitch.
I would expect that with increased sensor density the manufacturer would simply provide a matched diffusion filter which effectively cuts off spatial frequencies just above the sensors Nyquist frequency. Over-sampling in a simple non-TD system with a matched LPF really makes no sense. > Yes, they do filter the sensor optically (diffusing) but more pixels > may be better because you get better contrast. They may still do this > on a 10MP sensor because some lenses has enough resolution to need > it, but not to the same extent. This is, by the way, one of the > reasons why digital lenses need other qualities than resolution. To > some degree resolution make problems. Better contrast simply translates to higher recorded spatial frequencies or resolution, which as Herb suggested will be lost on a poor performing lens. Digital lenses are marketing hype, most lenses that perform well on film will perform well in a direct digital capture system. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
