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Author Topic: X-Rite i1Profiler optical brightener statement  (Read 1900 times)
rasworth
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« on: June 27, 2011, 04:14:55 PM »
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Published June 24, http://www.xrite.com/product_overview.aspx?ID=1397&Action=support&SupportID=5501

In short, it states the improved profiling engine works well for papers with oba's.  I assume, but it does not state, an i1Pro non-uvcut is sufficient.

Added by edit - I found several useful items in the Common Helpdesk Quetions that were published in the last few days.  I guess this will have to serve as our users manual.

Richard Southworth
« Last Edit: June 27, 2011, 04:21:28 PM by rasworth » Logged
Jalok
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« Reply #1 on: June 29, 2011, 09:54:49 AM »
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"...
The new i1Profiler software includes a completely new profiling engine, which provides already by default a most neutral gray axis and this effects on all Rendering Intent tables. This has also been confirmed for papers containing optical brighteners.
..."

This put a final word on a recent topic about i1Profiler and OBC. It might not have indeed the same PM5 OBC routine, but acts as it would have something very similar. X-Rite confirmed what many people have noticed before. Something even better than the PM5 feature because it works with all rendering intents.
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nkpoulsen
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« Reply #2 on: June 29, 2011, 10:48:14 AM »
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As I understand it, the reason that PM5's OBC worked only with the Perceptual Rendering intent, is because Gretag-Macbeth did not want to mess with the colorimetric or the saturated rendering intents, which were more precisely defined in the ICC standard.  The perceptual rending intent was less precisely defined, so GM felt that they could legitimately offer the OBC feature for that particular intent.  This was related to me by a GM engineer at the time.

GM was a classy company, and it pained greatly me to see it absorbed by X-Rite. 

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Mark D Segal
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« Reply #3 on: June 29, 2011, 10:50:07 AM »
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.............

GM was a classy company, and it pained greatly me to see it absorbed by X-Rite. 



Indeed.
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Mark D Segal (formerly MarkDS)
Author: "Scanning Workflows with SilverFast 8....." http://www.luminous-landscape.com/reviews/film/scanning_workflows_with_silverfast_8.shtml
TylerB
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« Reply #4 on: June 29, 2011, 11:25:34 AM »
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"...
The new i1Profiler software includes a completely new profiling engine, which provides already by default a most neutral gray axis...

at what setting? The numerical control has no apparent meaning with relation to how the resulting characteristic resembles profilemaker of profiler neutral axis settings.. as far as I can tell...
Any insight?
Thanks,
Tyler
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yannb
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« Reply #5 on: June 29, 2011, 02:27:10 PM »
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at what setting? The numerical control has no apparent meaning with relation to how the resulting characteristic resembles profilemaker of profiler neutral axis settings.. as far as I can tell...
Any insight?
Thanks,
Tyler

Hi,

If I interpret the help text in i1Profiler, then it's like this:
Slider to the left (default) = neutral gray
Slider to the right = paper colored gray

Regards,
Yann
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TylerB
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« Reply #6 on: June 29, 2011, 02:39:01 PM »
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right, the reason I'm asking though is that there has been mention that the "colorful" preset was provided to emulate one of the commonly used Proflemaker builds (don't have it and can't recall the name), and that preset moves the gray slider to 75... which was a bit odd...
But thanks,
Tyler
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rasworth
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« Reply #7 on: June 29, 2011, 02:39:13 PM »
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I think it's the other way around, if I am correctly interpreting their helpdesk info on the subject:

http://www.xrite.com/product_overview.aspx?ID=1397&Action=support&SupportID=5500

I believe they are stating "paper gray" in other than the high tones is obsolete - their default setting for printer profiling setting "Colorful" is 75, which leads me to believe that more to the right is more neutral gray, or at least the crossover from neutral to paper occurs farther up the highlights.  Or something.

Richard Southworth
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TylerB
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« Reply #8 on: June 29, 2011, 03:30:00 PM »
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actually this statement-
"An option Profile Settings -> Perceptual -> Neutralize Gray in the i1Profiler software even  allows you to enlarge the range of how far the neutralisation of grays goes into the more chromatic color areas."
seems to imply the slider is not going between the two previously understood options- paper gray vs neutral gray- but more like a neutral "width" control...

good grief
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