Timeline for Is it possible to save CMYK renders from Blender?
Current License: CC BY-SA 3.0
18 events
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| Apr 20, 2016 at 6:55 | history | edited | ideasman42 | CC BY-SA 3.0 |
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| Apr 20, 2016 at 5:15 | history | edited | ideasman42 | CC BY-SA 3.0 |
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| Apr 20, 2016 at 4:54 | history | edited | ideasman42 | CC BY-SA 3.0 |
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| Apr 20, 2016 at 4:24 | comment | added | Dontwalk | Moving forward... Printing ink on anything is old news... | |
| Apr 19, 2016 at 23:03 | comment | added | Gez | Let us continue this discussion in chat. | |
| Apr 19, 2016 at 22:08 | comment | added | Gez | No, exactly the opposite: Both are perfectly capable of producing correct results. The reporter said that he wasn't able to produce a good separation with Photoshop*. I was pointing out that if that was the case, he won't be able to produce a good separation (according to his expectations) with Imagemagick either, as both PS and IM do basically the same. *) This was what the reported said: "For my business, I normally need to convert every project into CMYK for print and that is where the colors of the RGB jpg are really screwed up and I spend hours recoloring my entire Blender creation." | |
| Apr 19, 2016 at 22:01 | comment | added | ideasman42 | @Gez, are you saying its impossible to get a usable CMYK file out of ImageMagick and Photoshop? If so, such a statement deserves some justification, can you link to more detailed references on this topic? | |
| Apr 19, 2016 at 14:45 | comment | added | Gez | Just to be clear: I do not agree with this solution because it contributes to bad practices as it helps people to get results that are most likely wrong. CMYK is a color model with a very specific purpose and it's intimately tied to ICCs. The person who asked this feature clearly doesn't understand CMYK and ICCs (says he can't produce good separations with Photoshop, which uses the same rendering intents than imagemagick). That person won't be able to produce a proper file for print anyway, but this script will enable him to use hacks instead of learning the basics. | |
| Apr 19, 2016 at 13:09 | comment | added | Gez | "can be used wih color profiles" suggests that it is an option. It is not. An untagged CMYK file is plain wrong. I insist that this application is way outside of the scope of Blender, but since you're going to keep working on it anyway, keep in mind that an ICC profile should be mandadory. And for the matters, 300 dpi is the minimum recommended resolution for high quality photo printing in offset presses. That probably should be set too, although it will affect the size of the printed size. Again, a whole can of worms that doesn't belong to Blender at all. | |
| Apr 19, 2016 at 3:09 | comment | added | ideasman42 | Made this write tiff images by default, can be modified easily. | |
| Apr 19, 2016 at 3:09 | history | edited | ideasman42 | CC BY-SA 3.0 |
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| Apr 19, 2016 at 2:51 | comment | added | ideasman42 | This add-on can be used with color profiles, so its not preventing you from using device dependent settings. And agree this is out of scope for Blender, thats why it can be done as an add-on. If someone wants to pass arguments for DPI, page size... etc. They can avoid having to handle this in an external program. | |
| Apr 18, 2016 at 23:27 | comment | added | Gez | CMYK is device dependent, and unlike RGB where untagged is usually assumed to be sRGB, a CMYK file without a colorspace definition is meaningless (and potentially dangerous if it's sent to print). Also, CMYK makes sense for process printing (offset presses, for instance) and it has little use in any printer that contains a driver taking care of the separations itself (any inkjet, laser, plotter, etc.) unless you really know what you're doing. And even in that case, the way you prepare a file for print (marks, resolution, etc.) is out of the scope of Blender. | |
| Apr 18, 2016 at 23:21 | comment | added | Gez | This excercise is pointless and I'm sure there's a better use for your time and efforts. First of all: PSD is not a format suitable for printing, it's intended for editing in Photoshop. So, if this file is intended to go to Photoshop anyway, why bothering? you can do the conversion in Photoshop. Heck, you can even do it with GIMP and the Separate+ plugin. Nobody who knows a thing about printing would need this, and most certainly wouldn't have any troubles converting a proper RGB from Blender to CMYK using the appropriate tool for the task. CMYK has no place in a program like Blender. | |
| Apr 18, 2016 at 21:36 | history | edited | ideasman42 | CC BY-SA 3.0 |
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| Apr 18, 2016 at 20:28 | history | edited | ideasman42 | CC BY-SA 3.0 |
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| Apr 18, 2016 at 19:53 | history | edited | ideasman42 | CC BY-SA 3.0 |
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| Apr 18, 2016 at 19:44 | history | answered | ideasman42 | CC BY-SA 3.0 |