vuescan settings when profiling Nikon LS50

[Giorgio]

Hi.

Before all, I apologize if my English will sound... Italian! :-(

I'm pretty inexperienced and I need some hints: would you (please) help me?

This is my workflow:
- (Input tab) task -->"profile scanner"; source --> "Nilon LS50";
media ---> "image"
- (color tab) color balance --> "none", scanner color space--> icc profile;
Scanner ICC profile --> (I type) "myprofile.icc" ; "scanner IT8 data"---> I
put the file path to IT8 file;

Now I press preview, I set the grid and, from the drop down menu, I choose
"profile---> profile scanner"

That's all? no more settings? like curves, brightness, black point......

Later, when I'll scan my slides, I only do choose color balance "none" and
load that profile as well as IT8 data file. Corrections will be made in
Photoshop CS.

Is it ok?


Giorgio

 

[Roger S.]

This is my workflow:
- (Input tab) task -->"profile scanner"; source --> "Nilon LS50";
media ---> "image"
- (color tab) color balance --> "none", scanner color space--> icc profile;
Scanner ICC profile --> (I type) "myprofile.icc" ; "scanner IT8 data"---> I
put the file path to IT8 file;

Now I press preview, I set the grid and, from the drop down menu, I choose
"profile---> profile scanner"

That's all? no more settings? like curves, brightness, black point......>

That should be all you need and Vuescan will write an ICC profile.

Later, when I'll scan my slides, I only do choose color balance "none" and
load that profile as well as IT8 data file. Corrections will be made in
Photoshop CS.

You don't need the IT8 datafile except to make a new profile, but
having it there won't hurt anything.

 

[Giorgio]

"Roger S." <[email protected]> ha scritto nel messaggio

That should be all you need and Vuescan will write an ICC profile.


You don't need the IT8 datafile except to make a new profile, but
having it there won't hurt anything.

Ok it works.
But this is what happens: during the scan the preview image appears good.
When the scanning ends, after the refresh, the scanned images are shown
darker: It's hard to see the result of scanning. I do load the image in
Photoshop and apply a linear curve to see something light.
This an uncomfortable workflow.

Do you know why this happens and how to ?

Giorgio

 

[Giorgio]

"Giorgio" <[email protected]> ha scritto nel messaggio


Do you know why this happens and how to set up Vuescan to obtain the
"right" image"?
(sorry previous message has been sent incomplete)

Giorgio

 

[Mendel Leisk]

"Giorgio" <[email protected]> ha scritto nel messaggio


Do you know why this happens and how to set up Vuescan to obtain the
"right" image"?
(sorry previous message has been sent incomplete)

Giorgio

The Color Tab settings are ignored when you calibrate the scanner with
Vuescan, using an IT8 target slide. It's mentioned in the help file
somewhere. In other words, regardless of your color tab settings, the
same profile file (.icc extension) will be ouput.

 

[Giorgio]

"Mendel Leisk" <[email protected]> ha scritto nel messaggio

The Color Tab settings are ignored when you calibrate the scanner with
Vuescan, using an IT8 target slide. It's mentioned in the help file
somewhere. In other words, regardless of your color tab settings, the
same profile file (.icc extension) will be ouput.

ok. you're right. I do read better the help on line.....


Giorgio

 

[Bart van der Wolf]

SNIP

The Color Tab settings are ignored when you calibrate the scanner
with
Vuescan, using an IT8 target slide. It's mentioned in the help file
somewhere. In other words, regardless of your color tab settings,
the
same profile file (.icc extension) will be ouput.

That's right, so for the actual filmscans, one does need to adjust
exposure, brightness, White and Black point clipping percentages,
etc., for the desired result.

 

[Giorgio]

"Bart van der Wolf" <[email protected]> ha scritto nel messaggio


Bart,

That's right, so for the actual filmscans, one does need to adjust
exposure, brightness, White and Black point clipping percentages, etc.,
for the desired result.

you mean that I do manage those settings (after profiling) before scanning
my slides, I presume .
But I profiled my scanner with Color balance setted as "none" : W & B point
are not displayed.

Giorgio

 

[Mendel Leisk]

"Bart van der Wolf" <[email protected]> ha scritto nel messaggio


Bart,

you mean that I do manage those settings (after profiling) before scanning
my slides, I presume .
But I profiled my scanner with Color balance setted as "none" : W & B point
are not displayed.

Giorgio

That's my point: your color tab setting have no bearing on the .icc
file that is ouput. It will be the same regardless of your color tab
settings (assuming you haven't shifted. So, you haven't profiled your
scanner to only give correct color with specific Color Tab settings.

I believe Ed Hamrick says in the helpfile that to see faithful results
when using this .icc file you should set color balance to "neutral",
fwiw. Still, you're free to "improve" on the balance: Working with
previously scanned raw files, I prefer Vuescan's white balance and a
moderate amount of white clipping to neutralize and brighten slide
scans. Unless there's critical detail in the highlights the results are
fairly good.

 

[Mendel Leisk]

"Bart van der Wolf" <[email protected]> ha scritto nel messaggio


Bart,

you mean that I do manage those settings (after profiling) before scanning
my slides, I presume .
But I profiled my scanner with Color balance setted as "none" : W & B point
are not displayed.

Giorgio

Your color tab settings have no bearing on the .icc file that is ouput.
It will be the same regardless of your color tab settings (assuming you
haven't shifted. So, you haven't profiled your scanner to only give
correct color with specific Color Tab settings.

I believe Ed Hamrick says in the helpfile that to see faithful results
when using this .icc file you should set color balance to "neutral",
fwiw. Still, you're free to "improve" on the balance: say with white
balance and more agressive clipping. I find that helps, at least for
the majority of my scans. The film base is quite yellowed. As long as
you're doing scan-from-disk with previously scanned raws, there's no
harm in trying agressive settings.

 

[Mendel Leisk]

That's my point: your color tab setting have no bearing on the .icc
file that is ouput. It will be the same regardless of your color tab
settings (assuming you haven't shifted. So, you haven't profiled your
scanner to only give correct color with specific Color Tab settings.

I believe Ed Hamrick says in the helpfile that to see faithful results
when using this .icc file you should set color balance to "neutral",
fwiw. Still, you're free to "improve" on the balance: Working with
previously scanned raw files, I prefer Vuescan's white balance and a
moderate amount of white clipping to neutralize and brighten slide
scans. Unless there's critical detail in the highlights the results are
fairly good.

Woops, meant to say shifted the slide or adjusted the it8 grid
on-screen, but didn't complete my sentence.

Also, my apologies: I think I'm not responding in the right way, the
previous text is hidden. I don't really understand how to display it,
or why the defaults are set up this way.

 

[Jeff Randall]

you mean that I do manage those settings (after profiling) before scanning
my slides, I presume .
But I profiled my scanner with Color balance setted as "none" : W & B point
are not displayed.

Giorgio: Vuescan creates what is called a matrix profile that
specifies only the RGB primaries, the RGB gammas, and W point. It does
not create profiles that include CLUTs that are very specific to the
scanner settings (especially exposure and color balance) that were used
when creating the profile. This is the advantage of Vuescan. The
matrix profiles won't do as well on the quanatative side-by-side tests
as a regular profile, but for most general photography conducted under
variable conditions, the Vuescan approach is very good.

Jeff

 

[Giorgio]

Jeff
, but for most general photography conducted under
variable conditions, the Vuescan approach is very good.

This is

Tks
Giorgio

 

[Giorgio]

I believe Ed Hamrick says in the helpfile that to see faithful results
when using this .icc file you should set color balance to "neutral",
fwiw. Still, you're free to "improve" on the balance: say with white
balance and more agressive clipping. I find that helps, at least for
the majority of my scans. The film base is quite yellowed. As long as
you're doing scan-from-disk with previously scanned raws, there's no
harm in trying agressive settings.

Imho, slides (Ektachrome) are not yellowed.
I will try setting color balance to "neutral" as you suggested.

Tks

Giorgio

 

[Alan Browne]

Hi.

Before all, I apologize if my English will sound... Italian! :-(

Don't apologize. Thanks for making the effort to write in English.

 

[Giorgio]

Giorgio wrote:

Don't apologize. Thanks for making the effort to write in English.

)))


Giorgio