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[filmscanners] Re: scanner dmax discussion
on 7/19/03 7:57 AM, Austin Franklin at austin@darkroom.com wrote:
> Hi Berry,
>
>>> OK, so
>>> here is an exercise for you. The CCD has an output voltage of
>> 0-2.5V, with
>>> a noise of .001V. How many bits do you need to "sample" the
>> data with such
>>> that the entire dynamic range available from the CCD data is
>> captured, and
>>> why?
>>
>> 12?
>
> Let's see... 2.5 / .001 = 2500, and the nearest binary power that'll hold
> 2500 values is 12...so I'd say that's correct.
>
> Regards,
>
> Austin
>
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That's how I did it, too.
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