A basic guide (see post #1) to setting up ARGYLL CMS profiling on your computer

I have managed to alter the CAP480.txt file in order to pre-condition it.
It worked and I have now new set of .ti1, .ti2 and a .tif file to print and compare the profiles from original CAP480 and the pre-conditioned one.
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I have printed the B. Atkinson image and what I see is better shadow details in the print which is preconditioned. The neutral rendering curve is different in ColorThink as well, but to be honest, what to make of that I am not sure.
I think, I see magenta tint in very deep shadows which is not good at all. I might imaging it, so need to check on that.
I like that I see much further into shadows with this preconditioned profile, so would prefer it. There might be other advantages, but I need to print a bit more to come to conclusion.
The only concern I have at the moment is this magenta cast in deep shadows.

Cheers
Pete

following scenario occured: I have profiled a Epson 1400 equiped with OCP Dye inks and tried the CAP957
I read the target print both with CM and i1 trough the batch and have quite high rate of Peak error
with the i1:
Profile check complete, peak err = 30.000608, avg err = 1.251890, RMS = 2.301853
I forgot to write down the numbers for the CM readings

Is there a way to check which "Line" or maybe even exakt patch is ready "off" the charts ?
How could I reread the line?
and finaly is there a way to implement this procedure into the batch file?

cheers
Serhat

Hi Serhat, I would try reading the original patches again and see if you get a better set of delta E readings. This will tell you if you have perfected the reading process. I suspect you will improve. Have a look at RogerB's (ArgProf#2.txt), I am not sure whether you can analyze down to lines and patches, but I am sure Roger will know a way!

Reading speed, ambient light, adjacent patch colour bleed are all things that need to be addressed and I found the CM with suitable black card masking performed very well and consistently. I have not tried the I1.

Re-reading lines is I think undesirable, I am never happy when that is necessary. The results after a re-read never seem to be good! I think it points to some weakness in the reading process.

There is no reason why a batch file shouldn't be used for a re-read, if a procedure can be established.

cls said:

following scenario occured: I have profiled a Epson 1400 equiped with OCP Dye inks and tried the CAP957
I read the target print both with CM and i1 trough the batch and have quite high rate of Peak error
with the i1:
Profile check complete, peak err = 30.000608, avg err = 1.251890, RMS = 2.301853
I forgot to write down the numbers for the CM readings

Is there a way to check which "Line" or maybe even exakt patch is ready "off" the charts ?
How could I reread the line?
and finaly is there a way to implement this procedure into the batch file?

cheers
Serhat

Click to expand...

From my experience I suspect that the i1Pro doesn't do too well with small patches in Argyll. With the xrite driver I can read 6mm patches but no chance in Argyll.

If you are getting these big errors I think you can't win Re-reading doesn't help to improve the accuracy. If you have measured the same charts with the CM and the i1 and want to compare results (ti3files) you can do it in Argyll as in my batch file. Alternatively, I prefer to use xrite's MeasureTool.See post #133 in this thread.

I am sorry to bring it back, but this is one of the best threads for Argyll and ColorMuni ever found on the net.
I am using Argyll_V1.8.3 with 480 patch which is provided on the front page. It outputs .icc profile to CMYK which can't be loaded by Photoshop, but I can select the profile from printer driver (Epson 1400). Anyway, the printout looks dark as seen in the picture below.

Am I missing or doing anything wrong? How to instruct Argyll to switch to and from CYMK and RGB icc output?

I am attaching you everything the pic, batch file of 480patch (I make it to 2 A4 for easy read), targens .ti1, .ti2., .ti3 and the generated CMYK profile for detail: https://dl.dropboxusercontent.com/u/36098737/Sun 11-08-2015 EPSON1400_DoubleGlossy-Argyll2.zip
The first printout is by ColoMuni bundle software, the latter is by Argyll (480patch).

P.S: Please excuse my my question, what is precondition profile?

Hi @sampheap, last question first, a preconditioning profile is a profile produced in a earlier profiling session which can be referenced in the Argyll command line in a subsequent session. It preconditions the session with the earlier results and usually improves the final results.

I see that I must update post#1 with the latest Argyll version.

Have you been successful with the 480 patch profile in the past? If so, what has changed other than the Argyll version? Do your old profiles continue to work correctly with Photoshop?

So preconditioning profile is previous generated .icc or .ti3? How do we reference to improve the result? Or is it like ColorMuni first target color chart which is needed to be read to generate the second patch?

Yes V1.8.3, there used to output as RGB before, but now it ouput as CMYK. One more note is that, It seems to read easily with minor re-read with the new Argyll; the issue is CMYK and print darker just like the pic above.

sampheap said:

I am sorry to bring it back, but this is one of the best threads for Argyll and ColorMuni ever found on the net.
I am using Argyll_V1.8.3 with 480 patch which is provided on the front page. It outputs .icc profile to CMYK which can't be loaded by Photoshop, but I can select the profile from printer driver (Epson 1400). Anyway, the printout looks dark as seen in the picture below.

Am I missing or doing anything wrong? How to instruct Argyll to switch to and from CYMK and RGB icc output?

I am attaching you everything the pic, batch file of 480patch (I make it to 2 A4 for easy read), targens .ti1, .ti2., .ti3 and the generated CMYK profile for detail: https://dl.dropboxusercontent.com/u/36098737/Sun 11-08-2015 EPSON1400_DoubleGlossy-Argyll2.zip

The first printout is by ColoMuni bundle software, the latter is by Argyll (480patch).

P.S: Please excuse my my question, what is precondition profile?

Click to expand...

Argyll is not my area of expertise so I could be wildly off base with this reply.

Why are you producing CMYK profiles???

The commercially supplied drivers for most inkjet printers work on the RGB model. Unless you are using a custom driver or RIP you will not need the CMYK colour model profile.

just a thought!

rs.

sampheap said:

I am sorry to bring it back, but this is one of the best threads for Argyll and ColorMuni ever found on the net.
I am using Argyll_V1.8.3 with 480 patch which is provided on the front page. It outputs .icc profile to CMYK which can't be loaded by Photoshop, but I can select the profile from printer driver (Epson 1400). Anyway, the printout looks dark as seen in the picture below.

Am I missing or doing anything wrong? How to instruct Argyll to switch to and from CYMK and RGB icc output?
The first printout is by ColoMuni bundle software, the latter is by Argyll (480patch).

P.S: Please excuse my my question, what is precondition profile?

Click to expand...

Looks as if the problem is in your version of CAP480.bat. The targen parameter -d4 will give you CMYK; sure enough your .ti1 file is CMYK. Change that parameter to -d2 and you will get RGB.