You might read some books to gain an understanding of scanning.
Winsor
Long Beach, California
USA
On Aug 15, 2004, at 12:48 AM, Simon Worby wrote:
> Without wanting to seem contrary, I think that that's about as unfair
> as you can get to film.
>
> 4000 dpi will give an image a mere 5760x3840 from the negative. So
> you're immediately forcing it to 22MP, which in itself is totally
> unfair. And then there is the fact that you haven't got a precise
> known distance between the scanner and the negative face, so it won't
> be in focus.
>
> I'm sure there's more, but to my mind, the only fair way to "scan"
> negatives for comparison would be to project them to about 24" x 18"
> and then scan in the projection at 1200 dpi, giving a 622MP image to
> start work from...
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