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Article #232Re: [Mpix Challenge] Megapixel resolution challenge
From: Mark Thomas
Date: Fri, 05 Dec 2008 00:19
Date: Fri, 05 Dec 2008 00:19
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2863 bytes
Alan Browne wrote: > Robert Coe wrote: >> On Tue, 02 Dec 2008 18:38:30 -0500, Alan Browne >> <alan.browne@Freelunchvideotron.ca> wrote: > >> : Film shooters are just as welcome to participate. >> : : See rule 1 b) para 2. >> >> I noticed that, and it puzzled me. How does the inclusion of film >> contribute >> in any way to answering the question that motivated the exercise? >> Which, I >> believe, was "Do you need more than 12 megapixels in a full-frame digital >> sensor?" > > An indirect relationship to be sure, but if somebody submitted such the > comparison could be of interest. A 4000 dpi scan of a 35mm frame is > about 21.5 Mpix. So comparable in pixel count. > Comparable in no of pixels, but not in quality - I've never seen a 4k scan showing any better pixel-level quality than about an 8Mp dslr equivalent (given nyquist/aliasing, etc). Surely you would need the proverbial (and rarely seen) *good* drum scan (and probably only from K25/Velvia/b&w) when you are getting into this territory..? Pushing past the extremes of 35mm format, imo, but it's interesting.
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