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Re: [APML] Going to the Luminance side?



Matt BenDaniel wrote:

> you scan 6x7 film at 2000 DPI you get 4300x5500 pixels, assuming you can
> anti-vignette the entire frame. An equivalent CCD chip would only need to
> be roughly 2150x2750 pixels 

You lost me here. Why? resolution would be half in the second 
example. Nyquist holds for CCD or film. (or are you saying
resolution is lost in the scanning process?).

Also, remember that 4000dpi scanners are reasonable now. I 
agree that CCD has more dynamic range than film, but I don't
think a CCD has more resolution than very fine grain film
scanned at 4000dpi (or higher in the case of a drum scan).

-- 
 -Jason Ware 

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