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Archived from groups: alt.comp.periphs.dcameras,rec.photo.digital,rec.photo.equipment.35mm,rec.photo.film+labs,rec.photo.darkroom (More info?)
Tom Phillips <nospam777@aol.com> writes:
>The result is unique and beautiful lighting *unattainable*
>in any single exposure or post exposure composite of
>separately exposed images.
>Digital simply _can't_ do this, since silicon sensors cannot
>hold an image on the image plane and accumulate additional
>exposure, divided exposures, or any other exposures.
You're wrong. There's nothing that prevents a CCD from being exposed
multiple times before the image is read out. It can be trivially done
just by keeping the shutter open using the Bulb setting in a dark room,
with any camera that has a Bulb setting. Digital cameras could be built
that open and close the shutter multiple times within a single exposure
too, though there's little reason to do so.
You're not talking about a limitation of digital photography, you're
talking about a limitation of the design of certain digital cameras (a
limitation that doesn't matter much in practice).
>Digital
>makes one separate image with each exposure and downloads it
>for processing. No more exposures possible. Different
>digital images can be manipulated and then merged as a
>composite, but it simply won't have the same brilliance and
>look of an actual multiple exposure. At minimum it will lack
>the continuity of subtle highlight and shadow gradations.
Why? It's the same light, added together in the same way.
I don't suppose you've ever actually tried doing this with a digital
camera.
>It's a fake, a composite, a manipulated image that doesn't
>reflect the skill and creative lighting techniques a
>professional photographer typically uses when working with
>film.
In both film and digital cases, the final image is produced by multiple
flash exposures that add together. Why is it fake if multiple
intermediate images are added, but real if all the addition is done on
the film or CCD?
Dave
Tom Phillips <nospam777@aol.com> writes:
>The result is unique and beautiful lighting *unattainable*
>in any single exposure or post exposure composite of
>separately exposed images.
>Digital simply _can't_ do this, since silicon sensors cannot
>hold an image on the image plane and accumulate additional
>exposure, divided exposures, or any other exposures.
You're wrong. There's nothing that prevents a CCD from being exposed
multiple times before the image is read out. It can be trivially done
just by keeping the shutter open using the Bulb setting in a dark room,
with any camera that has a Bulb setting. Digital cameras could be built
that open and close the shutter multiple times within a single exposure
too, though there's little reason to do so.
You're not talking about a limitation of digital photography, you're
talking about a limitation of the design of certain digital cameras (a
limitation that doesn't matter much in practice).
>Digital
>makes one separate image with each exposure and downloads it
>for processing. No more exposures possible. Different
>digital images can be manipulated and then merged as a
>composite, but it simply won't have the same brilliance and
>look of an actual multiple exposure. At minimum it will lack
>the continuity of subtle highlight and shadow gradations.
Why? It's the same light, added together in the same way.
I don't suppose you've ever actually tried doing this with a digital
camera.
>It's a fake, a composite, a manipulated image that doesn't
>reflect the skill and creative lighting techniques a
>professional photographer typically uses when working with
>film.
In both film and digital cases, the final image is produced by multiple
flash exposures that add together. Why is it fake if multiple
intermediate images are added, but real if all the addition is done on
the film or CCD?
Dave