Archived posting to the Leica Users Group, 2003/09/24

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Subject: [Leica] Digital M IS Possible?
From: "Richard F. Man" <richard@imagecraft.com>
Date: Wed, 24 Sep 2003 09:11:39 -0700

Just in case this gem got missed because it was in the Macro-Elmar thread, 
let me call this out again. Gregoire wrote:
****
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
****

The angle of incidence problem has been used by Leica as THE reason that a 
digital M is not possible. This is also one of the main reasons Olympus 
designs the 4/3 Systems from scratch. So now Gregoire says it is not a 
problem. If true, someone from Leica Camera please hire Gregoire :-)

// richard <http://www.imagecraft.com> 
<http://www.dragonsgate.net/mailman/listinfo> 

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