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[OM] Re: Why no digital backs for existing 35mm SLRs?

Subject: [OM] Re: Why no digital backs for existing 35mm SLRs?
From: Steven A.Melnyk <melnyk@xxxxxxx>
Date: Tue, 22 Feb 2005 22:39:16 -0500
There is such a back -- it is being developed for the Leica R8/R9 -- 
look it up on the Leica home page.


On Feb 22, 2005, at 10:34 PM, Curtis P. Hedman wrote:

>
> Inquiring minds would like to know... what are the technical reasons 
> why
> nobody has come out with digital imaging backs for existing 35mm manual
> focus SLR bodies? I can understand that cost might well be an issue, 
> but
> what are the technical reasons the preclude mounting a 24x36mm focal 
> plane
> array in the appropriate location within a custom-designed back? Such
> things exist for 2-1/4 square systems... One thing I thought of was the
> physical "head height" above the actual imaging plane of the detector 
> might
> interfere with the focal plane shutter. Another is the bit about the 
> angle
> of acceptance of the pixels (wells versus a layer surface). As I 
> recall,
> Kodak's first SLR digitals were modified Nikon or Canon bodies, 
> essentially
> just putting an imaging array at the right location behind the 
> shutter. I'm
> just a little surprised that nobody has seen fit to cobble together an
> imager and processing electronics with an odd data back - just to show 
> it
> could be done! So I figure there must be some hard technical issues...
> anyone have any thoughts or comments? I suppose (just for fun) one 
> could
> disassemble a low cost digicam, buy a replacement back from Camtech, 
> and
> kludge the bits together just to see what would happen... anyone care 
> to
> try????
>
> Curt
>
>
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Steven A. Melnyk
Department of Marketing & Supply Chain Management
Michigan State University
melnyk@xxxxxxx


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