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QTR-Quadtone RIP

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Device for creating curves/profiles

Device for creating curves/profiles

2015-02-15 by peter@...

Hi,

I am new to QTR as of today when I downloaded the trial and quickly made a print with my Epson 9900. I of course used the profiles/curves that came with the download. There were 3 profiles for the same Photo Black Ink, i could not find any info as to what paper these profiles were for? - I used Epson Trad. Photo Paper, which I believe is called Exhibition Fibre in the US (I live in South Africa).

I was impressed with the Neutral print, not so much with the warm and warmer - the color not the quality of the print.

So the next stage for me is to create my own profiles/curves. I have an old Gretag i1 Pro (uv cut) which I still use to profile my monitors, however X-Rite discontinued the software during OSX Leopard upgrade, I think? anyway it cannot be used for profiling printers, nor I assume for making profiles/curves with QTR.

I want to buy another device for profiling (both color work and my new venture into QRT and am a litle confused as to what device is best. I am not prepared to purchase the new version of the i1 X-Rite, I simply cannot afford R20k here in South Africa. My question is: will the Color Munki Photo do the job or another cheaper equivalent that can be used to create curves in QTR.

Thank you

Peter

Re: Device for creating curves/profiles

2015-02-15 by jeff.grant@...

Peter,

Your old i1Pro will work with the latest software, i1Profiler. To get the upgrade price for the softwarer you can contact Chromix in the US. If you are running Parallels, you can run the old Measure Tool from ProfileMaker. You can also use ColorPort from Xrite on your Mac.

Re: Device for creating curves/profiles

2015-02-16 by peter@...

Hi Jeff,
Thanks for the reply.
I have sent a query to Chromix with my device serial number and await their response to an upgrade.
I downloaded ColorPort OK, the software recognises my device and calibrates OK
However I cannot seem to open the QTR-21x4-random.txt file form the Measure Target menu, all files are greyed out.
I tried creating a new "patch-set" from the Create Target menu, here, the QTR files are not greyed out but again the appropriate txt file will not import.
I don't run parallels, I am using OS X 10.10.2
Am I missing something?
Peter


---In QuadtoneRIP@yahoog (groups.com, <jeff.grant@...> wrote :

Peter,

Your old i1Pro will work with the latest software, i1Profiler. To get the upgrade price for the softwarer you can contact Chromix in the US. If you are running Parallels, you can run the old Measure Tool from ProfileMaker. You can also use ColorPort from Xrite on your Mac.

Re: Device for creating curves/profiles

2015-02-17 by richard@...

You can use i1 Profiler in demo mode to do both patch and chart measurements and do not need to upgrade to the full version. At the end of the post I link to updated reference files that will work with the 21x4 random target included with QTR.

Take a look here: i1 Profiler and 21x4-random QTR Step Wedges
i1 Profiler and 21x4-random QTR Step Wedges
Use the current version of i1-Profiler to linearize custom Quad Tone Rip profiles
View on www.bwmastery.com
Preview by Yahoo



Richard Boutwell

Re: Device for creating curves/profiles

2015-02-17 by sanking@...

Richard,

Showing my lack of knowledge of file language, but how do you convert a .txt file to the .rwxf extention recognized by iProfiler?

Sandy

Re: Device for creating curves/profiles

2015-02-17 by richard@...

Sandy, I'm sorry, but I don't know. I think the newer reference file formats use XML to format the patches, but I don't know about how it actually works. I looked up at an existing CMYK CGATS reference file format that worked with i1 Profiler and copied the header information so it would work with both PM5 Measure Tool and 1i Profiler. I just save it as .txt and tell i1 Profiler to open CGAT format ref files. i1 Profiler has three or four extra lines in the header that are needed for it to work, but the extra lines don't get in the way with using MeasureTool. However, since it is getting data for CMY also you might need to get deleted those readings before dropping it on the LinearizeData script.

I made a 86x4 random target using excel and a random number generator to scramble the patches so I could read it in MeasureTool and i1 profiler. It didnt really work for what i was getting at so I went back to the 51 step.

Here is the header info for the 51 step target. You can modify the number of data sets, and the LGOROWLENGTH to change how many rows and the letter defines how many patches per row (A1, A2, A3 ... U1, U2, U3)

LGOROWLENGTH 3
"CREATED ""11/04/2014" #Time: "10:45:37"""
"INSTRUMENTATION ""i1Pro 1"""
ILLUMINATION_NAME D50
OBSERVER_ANGLE 2
KEYWORD SampleID
KEYWORD SAMPLE_NAME
NUMBER_OF_FIELDS 6
BEGIN_DATA_FORMAT
SampleID SAMPLE_NAME CMYK_C CMYK_M CMYK_Y CMYK_K
END_DATA_FORMAT
NUMBER_OF_SETS 51
BEGIN_DATA

Re: Device for creating curves/profiles

2015-02-17 by jeff.grant@...

Sandy,

I'm not near a machine with Profiler on it, but, from memory, bottom right of the screen is 'Save Workflow' once you are set up you select that and it then saves the workflow so that you can speed up next time. If this is wrong, I'll check it when I get home again.

Cheers,
Jeff

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