[Leica] S2 hits Photokina

[ken at iisaka.org (Ken Iisaka)]

Given the sensor area of 30x45mm, I would suspect that the register distance
or flange/back distance would have to be greater than on Leicaflex/R cameras
as the reflex mirror would have to be 25% larger.  If an adaptor is made, I
would expect it to be a teleconverter with a ratio of 1.4x, and the lenses
with protruding rear element would be unusable.
Still, the thought of putting the Summilux-R 80mm on an S-2, effectively a
110mm/1:2 sounds very intriguing.

On Tue, Sep 23, 2008 at 8:04 PM, <red735i@earthlink.net> wrote:

> And to make THAT worse, the amount of "acceptable" vignetting is a
> relatively undefined value.
>
> What you can be sure of is that leica will tell us, when they are ready....
>
> I think it was Steve or Doug that mentioned that it is feasible that R
> lenses could work 100% with an adapter, But with a smaller useable sensor
> area.......like in 24x36mm.  I think this was a good input.
>
> Wee will have to wait...
>
> Frank
>
> -----Original Message-----
> >From: Tom Schofield <tomschofield@comcast.net>
> >Sent: Sep 23, 2008 10:17 AM
> >To: Leica Users Group <lug@leica-users.org>
> >Subject: Re: [Leica] S2 hits Photokina
> >
> >Even within the circle you see on the paper, there are degrees of
> >brightness, which we call vignetting, that are a judgment call as to
> >what degree of vignetting you will accept as being the "image circle".
> >
> >Tom
> >
> >
> >On Sep 22, 2008, at 8:33 PM, red735i@earthlink.net wrote:
> >
> >> Not to beat around the bushes:  Wrong.
> >>
> >> Yes, an lens creates a circular inmage circle.
> >> The way to think about this is to place a circle on a sheet of paper.
> >> Over it, place 2 small black pieces of paper... one 24x36mm the
> >> other, 36mm square.  You will see that the basic issue is the
> >> DIAGONAL of the sensor, not an edge dimension.
> >>
> >> try it out physically, then you will never be confused about image
> >> circle and coverage.
> >>
> >> Frank
> >>
> >>
> >> Now a technical question...the image from a lens is an image circle
> >>> correct? Not a rectangle, correct?  Now a 35mm piece of film is a
> >>> rectangle so to make a larger sensor all one really would need to
> >>> do is
> >>> to make it square, 35mm square, and you'd have a larger sensor and
> >>> still
> >>> be able to use existing lenses, or am I WAY off on my thinking?
> >>>
> >>
> >> _______________________________________________
> >> Leica Users Group.
> >> See http://leica-users.org/mailman/listinfo/lug for more information
> >
> >
> >_______________________________________________
> >Leica Users Group.
> >See http://leica-users.org/mailman/listinfo/lug for more information
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>
>


-- 
Ken Iisaka
first name at last name dot org or com