I certainly don't mean to defend it but if you look at Clark's chart
today <http://clarkvision.com/imagedetail/film.vs.digital.summary1.html>
you'll see that his comparison of film and digital is actually a complex
and fuzzy curve.
The only film he rates at 16MP is Tech Pan at ISO 25. He also rates
Velvia 50 and Velvia 100 at 16MP but only for luminosity. The color
information is as low as 10MP. He shows that film takes it on the nose
as the speed goes up. He rates Provia 1600 as 2-4MP and Tmax p3200 as
not much more than 2MP.
But I'm with you. I know which images I prefer.
Chuck Norcutt
Winsor Crosby wrote:
> I looked at Clark's site a number of years ago before I ever held a
> digital camera. At that point he was saying 8MP would be necessary
> to equal film which seemed impossible technically. Not long after
> that I got a 3MP Sony and was amazed. I lost all interest in what he
> had to say. People have a point of view and they rationalize it,
> sometimes very elaborately. Interesting that he now finds that 15MP
> is now needed to equal a 35mm film frame.
>
> Of course there is more to an image than resolution and I think that
> Norman Koren is the only one to try to quantify that using
> information theory. Astonishingly his results actually correspond
> closely to the judgement of most people who look at images instead of
> the source information about them.
>
>
> Winsor
> Long Beach, CA
> USA
>
>
> On Oct 5, 2006, at 11:04 AM, Chuck Norcutt wrote:
>
>
>>I've never seen Clark's stuff before and it will take a while to
>>digest.
>> However, the comparison on Luminous Landscape was to Provia 100F and
>>not Velvia. According to Clarks graphs the Provia has luminosity
>>resolution up to 12MP but the color information is only good to
>>7MP. I
>>don't know what Clark's test equipment is but, as we've already
>>seen in
>>Moose's tests of the 5D and 300D all pixels are not created equal.
>>The
>>D30 has very big pixels.
>>
>>In any case, regardless of the theory, I (personally) didn't see
>>enough
>>difference to worry about. That's my bottom line.
>
>
>
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