Archived posting to the Leica Users Group, 2002/03/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]There once was a company called ifilm that has probably tied the whole idea up in patents for products that never materialized. I am currently working on adapting a Magnavision S2 back to an M camera One pass 2048 CCD Mark > From: Grégoire Vandenschrick <vandenschrick@geog.ucl.ac.be> > Organization: ucl > Reply-To: leica-users@mejac.palo-alto.ca.us > Date: Fri, 8 Mar 2002 17:20:52 +0100 > To: <leica-users@mejac.palo-alto.ca.us> > Subject: [Leica] Digital Back for leica M, Data back for Leica M > > Hi everybody, > > I was thinking about the possibility to have a digital back for leica M. > This could be very interesting, with maybe all the electronics put into a > 24x36 cartridge, and linked through a special base plate. I discused it with > a dealer in Brussel (Campion) and it seems that a full frame (24x36) ccd > exists, but that it cannot be used in 24x36 because of an angle question > (the light has to arrive at the ccd surface with a quite little angle). so > it will only be used for middle format (4.5x6, 6x6) digital back. > > So, this problem seems to be a little bit the same as the light fall off in > the squares of a ground glass (you know, in the corner of your old Rollei > waist level finder). In such situation, the solution is simple, the light is > "redirected" by a fresnel lens just after the ground glass (or just > before??). > > Why couldn't this be done too for a ccd? Is the size of the > fresnel/catadioptric facets too small to be produced with the current > technologies? So, do we have to resign and never have for us a full frame > digital ccd? > > Another thought: > > I was last days making a data base of all my negs, and, having some delay, > some negs have no references. It's such a pain to record all this, and > having to write every bit of info in the field, for each shot! not a work > for me! As you know maybe, the Nikon F5 can not only store every info about > each pictures it takes, but also print it on a frame when you rewind the > neg. I was so thinking about a data back (I know, with a Leica M, even with > the M7, you'll never have the diafragm value, neither the focus distance) > that could print on a frame (on demand) the datas for all the pics, maybe > just the time and date, some alphanumeric info you could enter for the neg > (location name, lens used and so on). This would be beter than those ugly > red marks on the right bottom corner of your pics. Maybe this could only be > possible with the M7, but the M6 has sensors for speed, and if I remember (I > will not take a pic of my office to confirm), the leds stop flashing when > you fire, so, the M6 should be aware of the number of pics taken, or at > least, this could triger the recording of the speed and time (set and given > by the data back) > > Well, that's it, quite stupid maybe, or quite common, I don't know, but I > would like to hear from you all if these backs would be useful, or not, or > maybe some of you should be able to kill some of my dreams by ingeneering > advice about these (just to know it's feasable or not is a thing!). > > Thank you > > Greg VDS > > Gregoire Vandenschrick > Department of Geography > Université catholique de Louvain > 3, Place Pasteur > B-1348 Louvain-la-Neuve > Belgium > vandenschrick@geog.ucl.ac.be > Tel.: ++32 (0)10 47 24 42 > Fax.: ++32 (0)10 47 28 77 > http://www.geo.ucl.ac.be > > > -- > 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