Archived posting to the Leica Users Group, 2001/11/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I have and have used over the past three years, a Philips 6mp chip. It is laid out in quadrents and all four quadrents must be read in simultaneously. The data is seriously convoluted and takes "major" electronics and firmware to put it back into the proper order as if it were a normal CCD. And to do this on the fly for six million pixels, and then do interpolation, color space conversion, PRNU (dead or damaged pixel repair), etc... is a major operation. So I suspect that the task was a bit overwhelming for a consumer level camera. The CCD I have does work and does take photographs. Perhaps Philips re-designed it and introduced new problems. As far as an M mount digital camera goes, as I have said numerous times before, the resolution and MTF curves for modern M lenses is not compatible with imaging on a CCD or CMOS sensors. Jim At 12:48 PM 11/4/2001 +0000, George Day wrote: >No kidding? What sorts of problems? > >on 11/4/01 7:24 PM, Raimo Korhonen at raimo.korhonen@pp2.inet.fi wrote: > > > Well, Contax/Yashica/Kyocera do not have the chip either - it is > designed by > > Philips and they seem to have problems with it. Pentax already dropped > their > > camera which was to use it. > > All the best! > > Raimo > > Personal photography homepage at > > http://personal.inet.fi/private/raimo.korhonen > > > > -----Alkuperäinen viesti----- > > Lähettäjä: George Day <george@rdcinteractive.com> > > Vastaanottaja: leica-users@mejac.palo-alto.ca.us > > <leica-users@mejac.palo-alto.ca.us> > > Päivä: 04. marraskuuta 2001 19:17 > > Aihe: digital, was: Re: [Leica] Piezo Plunge > > > > > >> Well, > >> > >> This has been beaten to death, but a digital M-mount camera would make all > >> the sense in the world. Not for the purist, of course, but you can > bet many > >> an amateur and working photographer on pounce on such a beast. If Leica > >> could get their hands on (assuming they don't have it) a Contax-style > >> full-frame chip... > >> > > > > > > -- > > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > >-- >To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html