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     áòèé÷ :: Filmscanners
Filmscanners mailing list archive (filmscanners@halftone.co.uk)

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Re: filmscanners: Re: filmscanners: supra 400



On Thu, 6 Sep 2001 10:08:20 +1000  =?iso-8859-1?Q?Rob=20Geraghty?= 
(harper@wordweb.com) wrote:

> Odd.  I thought Tony said the SS4000 aliased less than 2700ppi scanners.
>  Can someone explain this to me?  ISTM that people are seeing grain at 
> 4000ppi
> and calling it aliasing?

It is utterly dependent on the film - not only grain size, but the 
sharpness of individual dye clouds or grains, and the degree to which they 
overlap. I have no grain aliasing at all that I can see with Fuji Superia 
100, 400, 800, but have seen some with rather overexposed 200. I don't use 
Kodak colour neg much, but never saw any problems with PJM640 or 400.

In general, the higher the pixel density the less often you will encounter 
grain aliasing and the less destructive will be its effects.

Regards 

Tony Sleep
http://www.halftone.co.uk - Online portfolio & exhibit; + film scanner info 
& comparisons




 




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