Archived posting to the Leica Users Group, 2003/09/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Surely not an engineer, though it could help, No, I just had last september my PHD thesis in Sciences. For the optical, I played for fun under Oslo Lite and Zemax, so I can understand a little bit optical design, and even software, optimisation and so on For the software, all my thesis was based on water stable isotopes modelling under Matlab, so software and programmation is ok For the silicon chip, I learned the basis in physic lessons, and I read what I can find on the sensor field. Now, Walter Zapp had none of the required qualifications to conceptualize and build the Minox ok! I surely don't claim I'm genius, far away from me, this idea! But why can't I think about the DigiBack because I'm not one of these highly qualified guys?! And to let you know, I computed yesterday eve a mean to achieve angular tolerance with CMOS, and it is working rather well, though not for the Noctilux, which has enormous angles of light (+-30° in the center!). I will maybe talk about this on the webpage if I can figure more precisely the thing. But stop saying DigiBack is a dream because of the angular tolerance - lens proximity problem, it makes me laugh now! For the corner, things are in fact easier than in the center, for in the corner, the light cone is quite steep, but not so big as in the center. Having computed this, if we don't consider Noctilux (wich can be recorded on all the field, without a problem, but not all the light intensity), All the lightrays coming from the center, or the border of the pupils of all the other leica-M lenses can be conducted on the CMOS without vignetting. That's it, read it again sam! Gregoire Vandenschrick - ----- Original Message ----- From: "Henning Wulff" <henningw@archiphoto.com> To: <leica-users@mejac.palo-alto.ca.us> Sent: Tuesday, September 23, 2003 9:00 AM Subject: Re: [Leica] New Leica Macro-Elmar M 90/4 > At 2:39 AM -0400 9/23/03, Afterswift@aol.com wrote: > >In a message dated 9/22/03 10:37:48 PM, henningw@archiphoto.com writes: > > > ><< I wish you were as correct with your Digital-M! That will take a bit > > > >more talent. > > > > Is he an optical, or software or silicon chip engineer? Are you > compentent in these areas, or any other relevant areas? > > -- > * Henning J. Wulff > /|\ Wulff Photography & Design > /###\ mailto:henningw@archiphoto.com > |[ ]| http://www.archiphoto.com > -- > 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: 6.0.520 / Virus Database: 318 - Release Date: 18/09/2003 - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html