Or disable the shutter completely and use electronics to control the
start and stop of photon collection (1/4000 flash sync speed anyone?)
Or adjust the back focus via a glass element attached between the lens
and body ( probably would have to be unique for each focal length :-( )
tOM
On Friday, September 12, 2003 at 18:25
Mark Dapoz <olympus@xxxxxxxxxxxxxxx> wrote:
> On Fri, 12 Sep 2003 clintonr@xxxxxxxxxxxxxxxx wrote:
>
> > Now, whether the circuit of a camera like an OM-4 would provide an
> > appropriate signal to activate a digital back or not, or if a
> > "mechanical" device like an OM-1 or OM-1n would be preferable, I don't
> > have any idea -- but I bet someone on the list will venture an opinion!
>
> I think this will be the least of the problems. All CCD's in consumer
> cameras have a glass plate installed over them. As an example here's a
> photo of the CCD used in the Olympus D-510 camera (2.1MP):
>
> http://olympus.dementia.org/misc/D-510_CCD.jpg
>
> This glass plate would project well into the travel of the curtain in any
> of the OM bodies. The CCD would either have to be modifed or some optics
> will need to be designed and placed in front of it so that the image at
> the film plane will be re-focused to the CCD plane. Either option is
> difficult and likely not worthwhile.
> -mark
>
>
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