RE: Re: [Leica] R8/R9 Digital Back announced

["bdcolen" <bdcolen@earthlink.net>]

There is one thing I don't get in all this - If the rear lens element
must be further from the digital sensor than it must be from the film
plane of the Leica M, and if what we're talking about is creating the
same sort of Digoflex for the M that Leica is creating for the R, why
can't this Digoflex simply consist of a bottom and back unit similar to
that being created for the R, with the sensor mounted at the correct
distance from the lens rear element?

- -----Original Message-----
From: owner-leica-users@mejac.palo-alto.ca.us
[mailto:owner-leica-users@mejac.palo-alto.ca.us] On Behalf Of Frank
Farmer
Sent: Friday, June 27, 2003 11:58 AM
To: leica-users@mejac.palo-alto.ca.us
Subject: Re: Re: [Leica] R8/R9 Digital Back announced


I think it goes something like this:  Film can react to light coming
from many different angles.  That is why the rear elements of M lenses
can be so close to the film plane.  However, the current batch of
digital sensor technology requires the light to hit the sensor at pretty
much a 90 degree angle (or much closer to it than film requires).
Because the shape of a M body puts the lens so close to the would-be
digital sensor, the sensor is not able to capture the desired image
because the light is hitting it at an obtuse angle whereas film is able
to capture the image because it can deal with that circumstance.  At
least, that is how I understand it.  Who knows whether sensor
techonology will 'catch up' with film in that regard so that a sensor
could be placed in a M type body.  Maybe it will happen.  Right now, it
is impossible.

Frank

- -------Original Message-------
From: Jim McIntyre <mcintyre@ca.inter.net>
Sent: 06/26/03 09:12 PM
To: leica-users@mejac.palo-alto.ca.us
Subject: Re: [Leica] R8/R9 Digital Back announced

> 
> Ok, I'd like some clarification. The consensus seems to be the M 
> lenses are
not suited to fit a digital body because of physics, angle of incidence
or whatever.

Now I realize that some of this will be buried in the archive, but I'm
lazy...I'd rather someone tell me again. ;-)

If the M camera can mount an M lense, and focus on the film plane, then
it seems logical that that same film plane can be a digital sensor. Am I
in deep space on this?

Kit, are you being coy or do you know something?

- ----- Original Message -----
From: "Kit McChesney | acmefoto" <kitmc@acmefoto.com>
To: <leica-users@mejac.palo-alto.ca.us
>
> Not necessarily. --K
>
> At 1:58 PM -0400 6/26/03, Emanuel Lowi wrote:
> >While the idea of an adapted M for digital is a no-go, what I'd like 
> >to
see is a
> >digital body with dimensions/size/weight very similar to an M with
Leicavit, that can
> >mount M lenses on the front.
> >
> >For me, the shape/size/weight of the M has as more to do with its
virtues
as a
> >shooting tool than do the specifics of its shutter type, 
> >advance/rewind
mechanism and
> >(omigosh) focussing system.
> >
> >Emanuel Lowi
> >Montreal
>
> Unfortunately, it's the lenses that are the main problem.
>

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