Re: filmscanners: Re: filmscanners: Re: filmscanners: Why not sRGB ?

["Anthony Atkielski" <atkielski.anthony@wanadoo.fr>]

Rob writes:

> The film is Provia 100F and the scanner is
> a Nikon LS30.

Hmm ... I scan Provia 100F (my favorite film) all the time with a Coolscan, too,
and I don't recall any problems with turquoise--then again I haven't shot
anything that was really a bright turquoise in recent memory.  If anything,
though, scans tend to come out with a cyan, blue, or green tint, particularly
for shots taken in shadow (I don't adjust curves or anything in the scanner, I
fix everything in Photoshop).

What manipulations do you customarily perform on your scans after they come out
of the scanner?  For routine stuff, I usually chop off the flat ends of the
levels (each channel separately), then find a neutral gray somewhere in the
image and use the curves to adjust the gray point.  That is usually enough for
most images, unless they have a lot of contrast, in which case some additional
fooling around with curves (sometimes a _lot_ of fooling around with curves) may
be necessary.

Currently I am using an LS-2000, but the procedures and results are exactly the
same as with the LS-30, the only difference being that the greater bit depth of
the LS-2000 gives you more headroom for manipulation, particularly when you are
trying to pull detail from shadows.  I think Vuescan lets you get deep scans
from the LS-30, though (or it is multipass that Vuescan provides?).

Anyway, turquoise should be really close to a straight cyan color, I should
think.

> Unless I can successfully scan the slide with some
> other scanner, I can't show you the colours for a
> comparison between what the slide actually looks
> like and what the LS30 produces.

Do you have an online example of what the LS-30 scan looks like?