[filmscanners] RE: Filmscanners - is this about as good asitgets?

["Paul D. DeRocco" <pderocco@ix.netcom.com>]

> From: Mats Petersson
>
> This is to do with the "automatic exposure" or "exposure metering". If you
> look at an AVERAGE picture, the overall image would be about 18%
> gray if it
> was a B&W image (at least, that's the theory). With modern cameras, there
> is multiple sensors that sense different areas, and try to figure out
> "what's going on", so that for instance if you're taking a picture of a
> snowy landscape, it compensates somewhat for the fact that the whole thing
> is very bright. It will not do this perfectly, but it will help a little
> bit to get a "better" exposure.

I would think the people who write firmware for digicams would be smart
enough to make it expose for the highlights, not the midtones, since
digicams clip hard. I'd rather have an image come out dark, if that's what
it takes to preserve the detail in certain hightlights. You can always bend
the curves in Photoshop to bring back the midtones. Indeed, clever firmware
could do that in the camera. The results wouldn't be technically accurate,
but then neither is film at the extremes.

--

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@ix.netcom.com

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