View Issue Details
ID | Project | Category | View Status | Date Submitted | Last Update |
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0008424 | Scribus | Color Management | public | 2009-09-10 06:53 | 2009-10-23 20:26 |
Reporter | victorp | Assigned To | jghali | ||
Priority | normal | Severity | major | Reproducibility | always |
Status | closed | Resolution | fixed | ||
Platform | Linux | OS | Fedora | OS Version | 10 |
Product Version | 1.5.0svn | ||||
Fixed in Version | 1.3.6svn | ||||
Summary | 0008424: Pure black CMYK(0,0,0,100) is wrong in PS when Color Profiles Applied | ||||
Description | In the attached sla i have a cmyk photo, an RGB photo, a barcode and 4 lines with pure cmyk colors. When applying color profile when printing to postscript file or during print preview, pure black becomes distorted in output. Pure black is used for the barcode and the "Pure black" text. But checking CMYK plates individually you can see, that "Pure black" is printed on all plates, that is not good. I assume that "Use blackpoint compensation" checkbox in Document Setup/Color management is for leaving pure black as it is in output. See attached sla file and screenshots. | ||||
Tags | No tags attached. | ||||
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2009-09-10 06:53
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2009-09-10 06:53
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Fixed. In case where input and output profiles where identical, the created colorimetric transform was less that optimal. >> I assume that "Use blackpoint compensation" checkbox in Document Setup/Color management is for leaving pure black as it is in output No, black point compensation map input colorspace blackpoint to output colorspace blackpoint. In case of a cmyk colorspace black point is not pure black but most often a color with ink coverage between 300-400% |
Date Modified | Username | Field | Change |
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2009-09-10 06:53 | victorp | New Issue | |
2009-09-10 06:53 | victorp | File Added: blackpoint.sla | |
2009-09-10 06:53 | victorp | File Added: CM-settings.jpg | |
2009-09-10 06:53 | victorp | File Added: image.jpg | |
2009-09-10 06:54 | victorp | File Added: image.tif | |
2009-09-10 06:55 | victorp | File Added: print-preview.jpg | |
2009-09-10 10:07 | jghali | Note Added: 0022479 | |
2009-09-10 10:07 | jghali | Status | new => resolved |
2009-09-10 10:07 | jghali | Fixed in Version | => 1.3.6svn |
2009-09-10 10:07 | jghali | Resolution | open => fixed |
2009-09-10 10:07 | jghali | Assigned To | => jghali |
2009-09-10 10:07 | jghali | Note Edited: 0022479 | |
2009-10-23 20:26 | christoph_s | Status | resolved => closed |