[filmscanners] RE: Scanner calibration

["Laurie Solomon" <laurie@advancenet.net>]

Alex,

If you stumbled on a solution that works for you, then use it until it no
longer seems to be working despite any and all the suggestions I or anyone
else may give you.  As for "...but would it be hardware reason the output
would be wrong completely with either Nikon CMS On or Off", I do not know
the answer for sure; I was merely speculating in an attempt to help you work
through the possibilities - and it is possible that it woulod be a hardware
reason.  It appears that the profiles that you are referring to for
different model Nikon scanners may be different to account for the
functioning and limitations of the models thay are designed to be used for
(i.e., hardware and design differences); but they also may have been
generated under different conditions (i.e., using different color
temperature settings, different environmental lighting conditions, or the
like) which might better reflect your personal operating circumstances.

> switching the Nikon CMS off results in near-to-be color balanced
>scans featured by slight green tint (barely visible sometimes), which is
>nice considering the output wasn't color processed in software yet.

Technically inaccurate, no matter if the Nikon CMS is on or off, your
monitor's color settings and if you are using the Operating System's color
management engine with the default monitor profile for that monitor as part
of your OS's color management system are processing the colors.  Hence, you
are not dealing with the raw scan per se but with color processed by
software displays. This does raise the possiblility that the greenish tint
might be introduced by your monitor, its profile, or its settings.  This
might especially be the case if you are comparing previews directly from the
scanner using the scanner software on your monitor against displays of the
image on the monitor that have gone through Photoshop and its color
management system.

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Alex Zabrovsky
Sent: Sunday, April 28, 2002 6:05 AM
To: laurie@advancenet.net
Subject: [filmscanners] RE: Scanner calibration


Thanks Lauri, but would it be hardware reason the output would be wrong
completely with either
Nikon CMS On or Off.
In my case, switching the Nikon CMS off results in near-to-be color balanced
scans featured by slight green tint (barely visible sometimes), which is
nice considering the output wasn't color processed in software yet.
Also, playing with profiling last weekend I incidentally tried LS2000/LS30
profile which is installed automatically into the OS upon Nikon Software
installation besides of
profiles for LS4000/LS40 and LS8000.
I didn't pay attention on these until last Friday, and then being tired from
all this profiling struggle I tried the LS2000/LS30 profile and that amazed
me. This one worked much better then either LS4000/LS40, LS8000 or Nikon CMS
being ON !
The problem is as follows as for my understanding: the unprocessed data out
of the scanner delivers slightly greenish scans. The Nikon CMS tries to
compensate for it adding substantial amount of pinkish tint which is way too
much ending with heavy pink tinted image.
So do the LS4000/LS40 and LS8000 profiles supplied with the Nikon driver.
On the other hand, the LS2000/LS30 profile adds very delicate pink/orage
tint in the amount which is just enough to compensate that green cast the
hardware output is featured by.
That seems to work quite well for me, so I worked out my procedure:
scanning into Photoshop with Nikon CMS off on the permanent manner, and then
performing Assign profile for LS2000/LS30.
After that the results obtained seems to be as 99 % neutral as would be
expected initially and are starting point for ordinary further manual
processing of necessary.

Regards,
Alex Z

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Laurie Solomon
Sent: Thursday, April 25, 2002 7:42 PM
To: alexz@zoran.co.il
Subject: [filmscanners] RE: Scanner calibration


Just speculation; but the pinkish cast could be possibly dou to a change in
the power current used to run the scanner; do you suffer any recent and
unusual fluxes in your electric power such as brownouts?  It also may be
cuased by a bad or deteriorating light source (e.g., a bad or deteriorating
LED or fluorescent tube in the scanner which is giving off a slightly
different color or color temperature).

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Alex Zabrovsky
Sent: Thursday, April 25, 2002 6:14 AM
To: laurie@advancenet.net
Subject: [filmscanners] RE: Scanner calibration


Yes, I also used to work with Adobe 98 in both Nikon 3.1.2 and Photoshop
delivering good, well balanced results, until recently the scanner began to
deliver pinkish scans with which I'm struggling till now...


Regards,
Alex Z

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Anthony Atkielski
Sent: Wednesday, April 24, 2002 10:08 PM
To: alexz@zoran.co.il
Subject: [filmscanners] Re: Scanner calibration


Alex writes:

> If so, it seems I'll have to turn the Nikon
> CMS off permanently.

I've always had it turned off in Nikon Scan 2.x, as it just messes up too
many things.  It seems to work okay in Nikon Scan 3.1.2; I have the color
space set to Adobe 1998 (the same space I use in Photoshop).

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