Archived posting to the Leica Users Group, 2003/09/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Greg I'm sure that you did a great job. Everyone that COULD see it, was very pleased with it. Jerry Grégoire Vandenschrick wrote: > I KNOW ther is that darn problem of very steep incident light in the > corners, because lenses are soo much closer to the film, and because the > sensors are 3D things (in the opposite, film is really 2-D flat??). It seems > the real problem with the incidence of light is a real and major problem > with the CCD type sensor, for in order to have a rather high fill factory, > every photosite has to be covered by a converging microlens. And as a > consequence of a very small sensitive zone in the photosite, once the light > comes with a good angle, finished, the light falls out of the sensitive > photosite zone. OK, I know that. and the situation will not change easily in > the field of CCD, because the technology has now about 25 years of life. > BUT, the CMOS technology is younger, and in full devellopment currently. Two > or three years ago, all the pro digital body were equipped with CCD, now, > the biggest sensors (full frame, 24x36) are CMOS, and they have no more the > cheap quality that was the reason they were not used for the upmarket. Now > the Upmarket is CMOS, because they are less expensive to produce, of the > same quality of the equivalent CCD, and because they are incident light more > tolerant!!! Have a look at the Canon EOS 1Ds (CMOS 11 Megapixels), the Kodak > DCS PRO 14n (CMOS 14 Megapixels) and so on. > > I think that Now Leica is working very hard on the digital back module for > R8/9, and they have no time to think about it, even if I had a polite answer > of one of their engineer that reassured me Leica was thinking about that for > a long time, and that they were looking at the new tech etc but not > realisable now. Ok, is it real, or does Leica have not in plan to do that > now, or not the capability, or team ressources, or Hermes doesn't find that > such a product, with its very high develloping cost, will not represent > enough income for the investment. > > So, I just wanted to look by myself, that's all, and doing it, I was quite > excited, this seems possible, if only CMOS sensor society were not so > reluctant to divulgate the characteristics of their product, one could know > exactly if ther is the possibility to adapt a full frame CMOS to the Leica-M > > Best > > Grégoire > ----- Original Message ----- > From: "John Collier" <jbcollier@shaw.ca> > To: <leica-users@mejac.palo-alto.ca.us> > Sent: Thursday, September 18, 2003 11:36 PM > Subject: Re: [Leica] Digital back for leica, project website > > > Do you think it is technically realistic? Leica doesn't think so and > > neither do the half dozen or so experts we have on the LUG. I suppose a > > half frame sized sensor might work but that would make a mess of using > > the viewfinder. > > > > John Collier > > > > On Thursday, September 18, 2003, at 02:03 PM, Grégoire Vandenschrick > > wrote: > > > > > frankly, my goal was to see by myself if this project could be > > > technically realistic first > > -- > > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.518 / Virus Database: 316 - Release Date: 13/09/2003 > > -- > 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