Canon6700D worse colors with PrintFAB then with Canon driver

smile
Posts: 37
Joined: Tue Oct 11, 2011 7:48 pm

Re: Canon6700D worse colors with PrintFAB then with Canon dr

Post by smile » Mon Sep 23, 2013 5:52 am

I see there is a folder inside the printfab with what appears like cartridge files (named by cartridge name) inside is what looks like linearization data.

Can you please provide a version of printfab that can edit these or utility for this job? I want to make tests, with prinfab to get optimal curves before printing the profile target. You can contact me by email the PM is disabled on this forum.

zedonet
Site Admin
Posts: 1793
Joined: Fri Oct 06, 2006 8:02 am

Re: Canon6700D worse colors with PrintFAB then with Canon dr

Post by zedonet » Wed Sep 25, 2013 9:29 am

There are two things we could try:

1. Sending in a PrintFab color profile would be helpful for us as we could compare the quality of the different profiling workflows - creating your own ICC profile vs. our measurement service. Maybe we can find out if there is a general problem in the ICC profile workflow.

2. Performing a printer density calibration before color profiling also makes sense. Currently it is only possible to print linearization curves using a command line tools and measurement data must be entered using a text editor. I could send you instructions by email. How do you measure density values - do you have a density measurement tool for your spectrophotometer or do you want to use Lab values?

smile
Posts: 37
Joined: Tue Oct 11, 2011 7:48 pm

Re: Canon6700D worse colors with PrintFAB then with Canon dr

Post by smile » Wed Sep 25, 2013 2:19 pm

zedonet wrote:There are two things we could try:

1. Sending in a PrintFab color profile would be helpful for us as we could compare the quality of the different profiling workflows - creating your own ICC profile vs. our measurement service. Maybe we can find out if there is a general problem in the ICC profile workflow.

I have sent email you scanned testchart for papers "papers.rar" did you get it? I got no reply from you to my email.

2. Performing a printer density calibration before color profiling also makes sense. Currently it is only possible to print linearization curves using a command line tools and measurement data must be entered using a text editor. I could send you instructions by email. How do you measure density values - do you have a density measurement tool for your spectrophotometer or do you want to use Lab values?
I measure density values by spectrometer then convert to density using profilemaker 5. If you could send me the reference data for linearization test chart so I can generate a target for my spectrometer I could print and read it. Then I could use your instructions to use my density values or perhaps enter them directly to required file.

How do I make the PrintFAB print with straight linearization curves?
I see that printfab saves data to C:\Documents and Settings\All Users\Application Data\ZEDOnet\PrintFab 1.x
the file that has the curves is *.tpr right?

THank you awaiting reply.

zedonet
Site Admin
Posts: 1793
Joined: Fri Oct 06, 2006 8:02 am

Re: Canon6700D worse colors with PrintFAB then with Canon dr

Post by zedonet » Fri Sep 27, 2013 2:01 pm

Hello,

the *.tpr files are the right place to edit linearization curves. I sent you an email with details.

smile
Posts: 37
Joined: Tue Oct 11, 2011 7:48 pm

Re: Canon6700D worse colors with PrintFAB then with Canon dr

Post by smile » Sun Jun 08, 2014 4:36 pm

Just to let everyone know, I was not able to resolve this.

Zedonet provided a custom version with possibility to print lin curves, but they were unable to produce any better ouput :(
I wonder has anything changed in this regard, is there any upgrades to software in printing lin curves?

Because now the PrintFAB works only if

a) you use Zedonet profiling service
b) you use Canon papers and Canon inks and have spectrometer or Colormunki etc. to make your own profiles.

The latter works because PrintFAB has canned lin curves that is not changeable by loading ICC profile, and Zedonet had made these lin cuves on Canon paper with Canon inks therefore the curves describe canon media and ink behavior. They do not match your third party inks that you might be using in your printer. Since that is a huge limitation considering how many users have a device to actually make profiles I suggested that a proper way to print lin curves would be available so that not only Zedonet but also any user who own proper equipment could make their own profiles.

This would be huge because now when you make your custom profiles with say Colormunki etc.you are still bound by manufacturer canned in the driver lin curves, the printFAB as it is now is no better, but could change if you could do your own lin curves.

Post Reply