In a message dated 11/3/00 11:23:26 AM Pacific Standard Time,
cnocbui@xxxxxxxxxxxxx writes:
>
> Only true of prints from colour negatives. Colour negatives have a
> greater dynamic range than colour slides, according to Shipman.
>
> Giles
>
Ed Hamrick, who knows far more than I, writes as follows in the Vuescan help
pages. The density ranges of the 2 films are about the same (1 f stop) but
the relationship between the scene and the film is different:
"Color negative film is able to capture a much wider range of intensities
than slide film, and this creates a problem when scanning negative film.
"Slide film maps a density range of 0:2.7 to an intensity range of 1:500, but
negative film maps a smaller density range of 0:2.4 to a larger intensity
range of 1:4000."
Warren
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