Thanks, John! So, why then is it hyped as being a new and significant feature of the K-5? Simply a marketing strategy?
Jack --- On Fri, 9/24/10, John Francis <jo...@panix.com> wrote: > From: John Francis <jo...@panix.com> > Subject: Re: K-5 vs. K-7 > To: "Pentax-Discuss Mail List" <pdml@pdml.net> > Date: Friday, September 24, 2010, 12:03 PM > > All CCD sensors "capture in analog and convert to > digital"; > CCD is short for "charge coupled device", which means that > the exposure value for each of the sensor elements is read > out > as an electric charge (pedantically still digital, > according > to quantum physics, but effectively an analog quantity). > In theory one could put an analog-to-digital converter at > each sensor site, but that would be an awful lot of > circuitry > (and hence larger and fewer pixels, with more generated > noise). > In practice most sensors will shuffle the charge along row > by > row (or column by column) to a small number of A-to-D > converters. > The earliest DSLRs had one-channel readout; I believe the > K-7 > and K-5 have four channels. > > > On Fri, Sep 24, 2010 at 11:44:43AM -0700, Jack Davis > wrote: > > I read this link on dp a day or so ago. Am very > impressed and have all but been "sold." ;) > > Not recalling the exact language, do you have an > understanding of the claim of the K-5 capturing in analog > and converting to digital...or something close to that? > > > > Jack > > > > --- On Fri, 9/24/10, P N Stenquist <pnstenqu...@comcast.net> > wrote: > > > > > From: P N Stenquist <pnstenqu...@comcast.net> > > > Subject: K-5 vs. K-7 > > > To: "Pentax-Discuss Mail List" <pdml@pdml.net> > > > Date: Friday, September 24, 2010, 10:50 AM > > > A link from Dario. He points out that > > > not only is the noise greatly reduced, but the > dynamic range > > > on blacks is much improved as well. > > > > > > > http://www.popco.net/zboard/zboard.php?id=dica_forum_pentax&page=1&sn1=&divpage=3&sn=off&ss=on&sc=on&select_arrange=headnum&desc=asc&no=14223 > > > > > > --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. > > > > > > > > > > > > > -- > > 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. > > -- > 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. > -- 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.
