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Author Topic: "No color Management" in CS6?  (Read 8478 times)
digitaldog
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« Reply #20 on: November 08, 2012, 01:09:27 PM »
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I have not observed (using CS5 on a Mac) that ACPU reduces the size of the printed image.

I've seen it on Mac. I don't know what exactly triggers it.
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Andrew Rodney
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JeffKohn
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« Reply #21 on: November 08, 2012, 01:18:50 PM »
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I've seen it on Mac. I don't know what exactly triggers it.
I suspect it has something to do with page margins and printer margins. Same thing happens if you print a letter-sized PDF on letter-sized paper with Adobe Reader. By default it wants to fit the entire PDF page within the printable area of the paper, which requires a slight size reduction (even though it's unnecessary since the part of the PDF that would have gotten 'clipped' is just whitespace).

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darlingm
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« Reply #22 on: November 08, 2012, 09:21:39 PM »
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To gang up more than one rendering or profile per page. You want to see on one print, RelCol and Perceptual from the same profile.  

Definitely this.  I loved being able to do this.  I hate paper waste, but waste a lot of time loading scrap sheets as cut sheets.
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Mike • Westland Printworks
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« Reply #23 on: November 08, 2012, 09:47:44 PM »
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To gang up more than one rendering or profile per page. You want to see on one print, RelCol and Perceptual from the same profile.  
QImage can easily do this.
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Ernst Dinkla
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« Reply #24 on: November 09, 2012, 05:48:03 AM »
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QImage can easily do this.

Right and it allows that with its color management on.

On the other request; Qimage knows three settings for color management: Qimage CM on, Let Printer CM, QImage CM off. The difference between the last two is that with Let Printer CM, the assigned profile of the image is still kept in the data transferred to the driver, with Qimage CM off the assigned profile is taken out. As Windows does not interfere unasked the whole workflow is transparent for different CM methods including profile target printing.

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« Last Edit: November 09, 2012, 08:12:28 AM by Ernst Dinkla » Logged
donbga
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« Reply #25 on: February 24, 2013, 11:30:16 AM »
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. But the other question underlying this whole thread is why one would want to print with no colour management altogether, except for printing profile-making targets, which the ACPU handles well - my experience with it.

Coming into this thread very late I can mention that some people who need to print with NCM are generating colorized digital negatives for making prints with alternative processes such as palladium printing, gum bichromate and so forth. This is very much the case for individuals using Mark Nelson's Precision Digital Negative system.

http://www.precisiondigitalnegatives.com/

Don Bryant
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l_d_allan
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« Reply #26 on: February 25, 2013, 06:30:54 PM »
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My understanding of ACPU is that it was designed to print profile-making targets, nothing more, and not intended as a general printing substitute for the normal Print dialog in Photoshop.

Agree.

Quote
In any case, I'm finding that printing out of Lightroom 4 is at once easy and very satisfactory.

Also agree. I infer that you are not saying that LR4 can be used to make profile-making targets.

Are the following correct?
  • LR4 can not be used to make profile-making targets
  • because there is no way to turn off color management.
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retired in Colorado Springs, CO, USA ... hobby'ist with mostly Canon gear ... let me know if you're in the area and would like a free guided tour of our photographically "target-rich environment"
Mark D Segal
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« Reply #27 on: February 25, 2013, 06:46:23 PM »
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I don't see any reason to use Lightroom for printing printer profiling targets when the ACPU was designed to be a safe and reliable way of doing this. I've never felt the need to try using Lightroom for this purpose so I can't comment on whether certain ways of tweaking it would do the job just as well. But why make life difficult when there is a simple solution freely available to us?
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Mark D Segal (formerly MarkDS)
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l_d_allan
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« Reply #28 on: February 25, 2013, 06:54:14 PM »
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The ACPU is "OK" for printing targets in Windows, and I am very pleased that Adobe gave it to us; but, it doesn't quite do what you might want/expect in Windows. Namely, there is no way that I have found to position the image on the paper, and the printed image is reduced in size. Not a big deal for printing targets, but annoying all the same.

If you really want the output of ACPU on Windows-7 to be a certain size (such as ... perhaps ... for an iSis), I've found that I can open
MyTargetForPrintingByAcpu.tif
in Photoshop, and use "Edit + Image Size" and then change the dimensions to be larger. I found it to be a trial-and-error process, but I could get the printed output from ACPU to be about anything I wanted it to be.

8.9" width often worked well. ACPU doesn't seem to care if you are printing an 8.9 x 11.6" document on a sheet of letter-size 8.5 x 11" paper. There generally was plenty of room on the bottom for the iSis to accomplish paper-handling.

The following algebra was helpful:
Code:
a      c
-   =  -
b      d

In the attached, note that you want to specify the resampling as "Nearest Neighbor (preserve hard edges)" to avoid dithering. It might do the same to uncheck the "Resample Image" checkbox.

TMI?
However, I've found the iSis with either i1Profiler or ColorPort seems capable of measuring the black calibration bar just above the actual patches, and from there figure out how to re-proportionalize the widths and heights. With PMP5, I've hit alignment problems ... off by one ... unless I use "Chart with Barcode" and let the software disregard/override the parameters in the iSis_INFO line (or leave out the iSis_INFO line entirely).
« Last Edit: February 25, 2013, 08:24:34 PM by l_d_allan » Logged

retired in Colorado Springs, CO, USA ... hobby'ist with mostly Canon gear ... let me know if you're in the area and would like a free guided tour of our photographically "target-rich environment"
l_d_allan
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« Reply #29 on: February 25, 2013, 06:56:49 PM »
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I don't see any reason to use Lightroom for printing printer profiling targets when the ACPU was designed to be a safe and reliable way of doing this.

Sorry, I guess I was "clear as mud". I just wanted to confirm that it would be inappropriate to try to use LR4 for profile-making-targets. My understanding is that there is no way to turn off color managment in LR4.

Correct?
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digitaldog
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« Reply #30 on: February 25, 2013, 07:02:45 PM »
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Are the following correct?
  • LR4 can not be used to make profile-making targets
  • because there is no way to turn off color management.

Correct (there's a hack which isn't reliable depending on the version of OS X).
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Andrew Rodney
Author “Color Management for Photographers”
http://digitaldog.net/
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