In Vuescan's manual, it says:

---
The Scanner color space is the color space used by a scanner, raw scan
file or raw digital camera file. It is also the name of the ICC file
that gets written when "Profile|Profile scanner" is chosen. There are
two options for Scanner color space - built-in, which is the color space
of a pre-profiled scanner, and "ICC profile", which is an ICC profile
produced by the "Profile|Profile scanner" command.
---

Now, through some messages on photo.net I have discovered that there are
two profiles "hidden" in the system folder/catalogue, named
MLTF2820Un.ICC (for negatives?) and MLTF2820Up.ICC (for positives?).
They must have been put there automatically during installation of the
Minolta software. The posters had seen significant improvements on the
raw scan when choosing one of these profiles. (If interested, see
http://www.photo.net/bboard/q-and-a-...?msg_id=005RJZ )

How do these profiles relate to the Vuescan options "built-in" and "ICC
profile"? What's the difference between selecting "built-in" and
selecting one of these two profiles?

I have the Dual II (and Mac OS 10.1.4), and haven't tried out the
profiles (yet). The posters on photo.net had the Elite II and Dual II,
respectively.

-- Helge

Hmmm... What can explain these experiences, then?

-- Helge


QUOTES START
I didn't know I had to set up the scanner profile (I even didn't know
that the scanner came with any profiles) for the SEII in the Vuescan
software.. all scans turned out slightly red (but much better than when
using the Minolta software, from which they looked horrible and usually
needed a lot of corrections in PS, -although this maybe takes just a
couple of seconds for a pro, I always had problems with getting the
"proper" colours) - after setting up the scanner profile in the "Color"
tag in Vuescan, the scans look beautiful - no colour cast, just
brilliant!!! (crazy I haven't figured out this before - have had this
scanner for more than a year now!) - so if any other people have
problems with colour cast with this scanner, I'd definitely recommend
you to check this out ;-) (I don't wanna think of how much time I've
wasted with colour corrections in Photoshop... I just thought this was
how the scanning world really was - a lot of pain, -now, I'll just leave
my thoughts of turning digital on ice, at least for so long

LATER IN THE THREAD
sounds like you've found them! do a preview scan with your standard
settings first, then you set up the icc file in the Color tag in Vuescan
- the photo preview on the screen will probably change instantly and you
will see the effect of the profile... please tell me if it works

REPLY
Definitely a difference with the "p" profile, applied to a Fuji Provia
Scan (the raw file). To my eye, the original has magenta cast, and with
the profile the result is more neutral. Thanks for the tip!

FROM ANOTHER RECENT THREAD
I was first scanning without an ICC profile set for the scanner, until I
scanned a slide which had some green leaves of a flower in it. The
leaves turned completely blue! I thought it was a bug in VueScan. After
discovering that there are two ICC profiles supplied with the scanner, I
set it in VueScan and now the colors look exactly like the colors on the
slide (the green leaves are green again...).

The two profiles supplied with my DSIII are named MNLT2820p.icc and
MNLT2820n.icc (or something like that - can't check it right now). I
thought the "p" profile was for slides (positives) and the "n" profiles
was for negatives, instead of one for 8 and one for 16 bit scanning, as
you suggested. So what's the truth about these profiles?
QUOTES END

In article <bebg5q$gju$1@ngspool-d02.news.aol.com>,
"Ed Hamrick" <usenet@hamrick.com> wrote:

Now I just did what's described below, and lo and behold, a magenta cast
disappeared from a Sensia 400 slide!

-- Helge

In article
<helge.gundersen-15611F.17001307072003@amstwist00.chello.com>,
Helge Gundersen <helge.gundersen@chello.no> wrote:

I just posted this to photo.net:

I'm afraid I got a bit carried away yesterday. Today, I have tried to
look into the matter a little more thoroughly, although still briefly...

For negatives, the p profile makes no significant difference for me
compared to Built-in and White Balance. Sometimes the p profile seems to
have the slight edge, other times built-in. Since I need to correct the
colours further anyway, this is not significant.

In Neutral (still with negatives), the p profile seems to be kind of
intermediate to Built-in Neutral and Built-in White Balance. The
midrange colours (including skin colour) has been clearly more right
than Built-in Neutral so far (going in the direction of a successful
White Balance, but not as far). But the "curve shapes" are different, so
the clouds may get less neutrally white. I'm not sure if it makes sense
to use it.

I haven't looked at many slides, but the results so far are
inconsistent. Anyway, the p profile is different than Built-in. On a
typically "cast-y" image, p profile White Balance was better than
Built-in! Indeed, the cast was gone (not counting a blue, "natural"
shadow cast in a part of the picture), only some very minor adjustments
being necessary. For another image, Built-in was better than the p
setting.

It seems that I can add the p profile to the other settings to toggle
between, especially for slides with casts.


In article
<helge.gundersen-A11D0D.17230107072003@amstwist00.chello.com>,
Helge Gundersen <helge.gundersen@chello.no> wrote:

Just for your information, I have got good results with a Minolta
ScanDual III this way:
- I scan to a RAW file with Vuescan;
- I open the file with Picture Window Pro, and tell PWP the file
color profile is the one given by Minolta (the "p" profile for
slides and the "n" profile for slides);
At that time, colors and gray gradations are accurate. Then I transform
the picture to the Adobe RGB profile and edit it.

Regards,
Fanta

Fanta
Can this raw file be read by Dimage Viewer?
"Fanta" <fanta@nospam.it> ??? news:3F0F4280.6010504@nospam.it ???...

I don't know, but if Dimage Viewer can read 48 bit/pixel TIF files, then
most likely can read it. I cannot try as I don't have that application
(either it wasn't' bundled with my scanner, or I have not installed it).

Regards,
Fanta