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Author Topic: ICC Input Profiles for Scanned Negatives  (Read 5450 times)
ArtM
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« on: June 01, 2010, 08:55:29 PM »

I have several hundred Vuescan scanned via Epson 4990 colour 35mm negatives
 of various cropped sizes from various years and on various film types with various colour casts.

I have set my Dell U2410 monitor ICC & my Epson R1800 printer ICC.

But I am stumped as to what to set the Qimage Edit-Preferences-Color Management Input EXIF/X/Y/ICC.

As far as I know (how do I tell ??) there is no ICC Profile attached to the scanned negs.

The main reason I am asking this is that my printed pics are  all blown out & pink-rosy !

Any tips/guidelines/links appreciated.

- Art
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Fred A
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« Reply #1 on: June 01, 2010, 09:35:05 PM »

Quote
As far as I know (how do I tell ??) there is no ICC Profile attached to the scanned negs.

Hi Art.
The top line (see attached screen snap) is for unknown device or no color space.... and it will use the color space that is selected in that box.
As you can see, the default color space in the top box is set to RGB.

That would be the correct setting.

Fred
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ArtM
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« Reply #2 on: June 02, 2010, 01:25:39 AM »

Thnx  Fred.  Ok Tried that.  Now am into 'the Greens' - as in green cast.
Have narrowed it down to the Monitor ICM.  When its OFF - no green cast.
When its ON/Set - Green Cast.  I set it to 'DELL_U2410.icm' that comes with
the monitor - which supposedly is delivered 'calibrated'.
Another confusing problem is that I must View-Rebuild Thumbs to reflect the
latest settings - They don't change real time !

However - no matter what the Monitor Profile or the affected images on screen,
the printed pics are unaffected by its setting.  It just throws you - until you see
the print or preview in an unaffected colour.

So I will press on.  Adjusting images with filters as required & printing.

A question - noticed the R1800 in your screen shot - what is the latest driver
supposed to be ?   In the printer setup-properties-maintenance mine shows 6.52.

- Art

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Ernst Dinkla
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« Reply #3 on: June 02, 2010, 07:56:31 AM »

I have several hundred Vuescan scanned via Epson 4990 colour 35mm negatives
 of various cropped sizes from various years and on various film types with various colour casts.

I have set my Dell U2410 monitor ICC & my Epson R1800 printer ICC.

But I am stumped as to what to set the Qimage Edit-Preferences-Color Management Input EXIF/X/Y/ICC.

As far as I know (how do I tell ??) there is no ICC Profile attached to the scanned negs.

The main reason I am asking this is that my printed pics are  all blown out & pink-rosy !

Any tips/guidelines/links appreciated.

- Art


Vuescan has a color management setting where you can assign a color space profile to the image file made with the scan. AdobeRGB, sRGB, whatever. Check that setting so you know what should be in the files. Any editing done on files used later on in a CM controlled workflow should at least start with an assigned color space. The editing done on a calibrated+profiled monitor after that step.


met vriendelijke groeten, Ernst Dinkla

spectral plots of +100 inkjet papers:
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm


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Fred A
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« Reply #4 on: June 02, 2010, 09:05:41 AM »


A question - noticed the R1800 in your screen shot - what is the latest driver
supposed to be ?   In the printer setup-properties-maintenance mine shows 6.52.

- Art


[/quote]

My driver has the same number running in 64 bit Windows 7.
As you found out, the monitor profile has no effect on the print other than it might cause you to "think" the image was not right and you might go to correct it.
Yes, you must rebuild the thumbs when you alter the profile, either by changing it, or turning it off.
If the monitor profile bothers you with the colors having a green cast, you can use the generic RGB profile provided by Qimage.
Also, just a mention: There are a number of quality monitor profiling tools around. They work well.
Ask Terry for a rundown of price versus results.

Fred
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