Eisbar Posted June 14, 2022 Posted June 14, 2022 QR code is an RGB jpeg. But for print I need CMYK - and black should be 100K. I converted to greyscale - but it is not 100k. Can anybody help to solve this? thx Quote
NotMyFault Posted June 14, 2022 Posted June 14, 2022 Hi, one time job or many files to process? can You upload the file? A channel mixer will probably do the job, use blend range to impact only intended area. Quote Mac mini M1 A2348 | MBP M3 Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.
NotMyFault Posted June 14, 2022 Posted June 14, 2022 cmyk 100k.afphoto Quote Mac mini M1 A2348 | MBP M3 Windows 11 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 | Dell 27“ 4K iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. I use iPad screenshots and videos even in the Desktop section of the forum when I expect no relevant difference.
Eisbar Posted June 14, 2022 Author Posted June 14, 2022 just 5 qr-codes! how to work with the channel mixer? Important is the clean 100K output! thx Quote
Lisbon Posted June 14, 2022 Posted June 14, 2022 I dont know much about CMYK, but 100K (CMYK: 0 0 0 100) is supposed to produce a dark gray, not black, right? Quote
Old Bruce Posted June 14, 2022 Posted June 14, 2022 7 minutes ago, Lisbon said: I dont know much about CMYK, but 100K (CMYK: 0 0 0 100) is supposed to produce a dark gray, not black, right? Kind of wrong. Black instead of rich black which is for photographs, not text. 0 0 0 100 can be properly printed with only one plate instead of rich black needing all four. Lisbon 1 Quote Mac Pro (Late 2013) Mac OS 12.7.6 Affinity Designer 2.6.0 | Affinity Photo 2.6.0 | Affinity Publisher 2.6.0 | Beta versions as they appear. I have never mastered color management, period, so I cannot help with that.
Lisbon Posted June 14, 2022 Posted June 14, 2022 6 minutes ago, Old Bruce said: Kind of wrong. Black instead of rich black which is for photographs, not text. 0 0 0 100 can be properly printed with only one plate instead of rich black needing all four. Thanks @Old Bruce Quote
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