On Wed, Oct 09, 2013 at 01:17:06PM -0600, Bill wrote: > On 09/10/2013 1:00 PM, Postmaster wrote: > >Larry Colen wrote: > > > >>It seems to me that if you had a rear illuminated sensor, with no space > >>between the pixels, and it had no bayer filter, then aliasing/moire would > >>not happen, because the light value would be averaged over the whole sample. > >> > >>It's the discontinuous aspect of what is effectively three overlayed photos > >>that is causing the aliasing. > >> > >>Is this correct? > >Nope. Aliasing is possible whenever the (spatial) frequency of the > >image is higher than that of the sensor. The interesting thing is that > >with 24 megapixels in an APS-C sensor you probably won't need an > >anti-aliasing filter in all but the most extreme cases (the absolute > >highest quality glass (at its optimum aperture), tripod mounting, > >mirror lock-up, high shutter speed). The Nikon D800 is notorious for > >demanding only top-shelf lenses and the pixel density of a 24MP APS-C > >sensor is even higher. > > > > > > > I think the key parameter Larry made is "no space between the > pixels". What he is describing, more or less, is film, which was > notoriously difficult to get aliasing off of. I suspect that at 24mp > with an APS-C sensor, we are seeing, for all intents, no space > between the pixels.
Sort of, but not quite. > > I just ordered a K3, as well as the battery grip, 35-135 lens, > flu-card and dongle from my local pusher. > I think I need help. OK. When it comes in, have him send it to me. I'll help you use it. I'm also quite interested in that 35-135 lens. > > bill > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
