Vuescan settings for "no corrections"

  • Thread starter Thread starter Sanaka
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Sanaka

I'm building printer profiles with EZColor. This involves scanning a
printout and an IT8 sheet in my flatbed. EZColor specifies that the
scan must be performed "...with all color management and/or
auto-correction options turned off"

What settings represent this state in Vuescan (besides RAW, I need a
TIF file)?

Yeah, I know, there's like 100 settings. That's why I'm asking,
because there's no big "off" button, and there's so many options it's
easy to miss some. But I figure at least this state should be
achievable for Vuescan, whereas who knows what the twain driver that
comes with the scanner will insist on doing no matter what.

Yes, it dawned on me that this has surely been asked. I looked a bit.
Linkage to "answer given previously" is welcome :-)

Does someone have a 'load options' preset for this they could perhaps
email?

Peace,
Sanaka
 
Sanaka said:
I'm building printer profiles with EZColor. This involves scanning a
printout and an IT8 sheet in my flatbed. EZColor specifies that the
scan must be performed "...with all color management and/or
auto-correction options turned off"

What settings represent this state in Vuescan (besides RAW, I need a
TIF file)?
Click to expand...

VueScan Raw = TIFF.
The Raw output is saved with the TIFF specification tags, so it can be
read as a TIFF file. Only caveat is that the profiling software may
not be able to handle the linear gamma Raw data as well as Gamma
corrected data. Depending on the software, there may be another
constraint on the White point.

You may also chose colorbalancing "none" and use the Device RGB output
profile setting.

Read the helpfile on these choices and learn about the VueScan
particulars as you go.

Bart
 
VueScan Raw = TIFF.
The Raw output is saved with the TIFF specification tags, so it can be
read as a TIFF file. Only caveat is that the profiling software may
not be able to handle the linear gamma Raw data as well as Gamma
corrected data. Depending on the software, there may be another
constraint on the White point.
Click to expand...

Thanks, Bart.

Somehow I figure a RAW file is just not what ezcolor wants, probably
because of the gamma issue you mention (and that I don't really grok,
but that's ok...:-)
I did dig up some archived posts on this which helped a lot.
You may also chose colorbalancing "none" and use the Device RGB output
profile setting.
Click to expand...

These seem to be the main things. I've arrived at settings I'm going
to try. If it works well, I intend to change the ones specific to my
setup (like Monitor profile and other non-essentials) to generic or
blank settings and make the resulting settings available as a "load
options" preset, i.e. "ezcolorprofiling.ini" that I can email or
otherwise make available for anyone who might want to try them. Or
maybe no one else is as whelmed by this issue as me and they would
have no reason to bother with it 8-)
Read the helpfile on these choices and learn about the VueScan
particulars as you go.
Click to expand...

Yup, yup. Still quite technical, often terse, stuff, however. Plus the
help files don't seem to be updated as often as VS itself, so some of
the references are to options that have been changed or relabeled,
like black/white point red/green/blue, and there's no
input|media|image setting anymore.

Again, thanks, and I'll try to post re: the success or failure of my
settings.

Time to profile!

Peace,
Sanaka
 
Sanaka said:
Somehow I figure a RAW file is just not what ezcolor wants, probably
because of the gamma issue you mention
Click to expand...

If you set "Output|RAW file type" to "24 bit RGB", then the
raw file will have gamma 2.2, which is probably what you need.

Regards,
Ed Hamrick
 
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