On 6 Jul 2004 at 18:20, Jostein wrote: > Thanks, Rob, > > I too suspected most DSLR's except the Kodaks to be that way. > Not having seen how a 6 Mpix image would look without anti-aliasing, it makes me > wonder. Nikon has apparently implemented a middle way with D70, doing some of > the anti-aliasing in software instead. > > Here's a quote from Yatish Kumar's review at > http://www.photo.net/equipment/nikon/D70/:
Their understanding of sampling and aliasing differs from mine. The fact is that no anti-aliasing software can convincingly repair problems caused by presenting data to the sensor at higher then the Nyquist frequency to any significant extent without downsampling (filtering) and losing a significant amount of the wanted data. Software simply can't predict whether the data that it sees is detail in the scene or errors caused by aliasing between the sensor pixels and high frequency image data. I'd be please to be set straight If my understanding is off-line. 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
