Post ArAcfe863cECPMl6H2 by Juankprada@mstdn.jp
(DIR) More posts by Juankprada@mstdn.jp
(DIR) Post #Ar9dGXr49fleVJQZA8 by Juankprada@mstdn.jp
2025-02-15T19:33:32Z
0 likes, 0 repeats
I think I’ve hit a limitation in my current setup for manga production.So far I’ve been using #krita for drawing and Gimp for post processing. I use Krita’s Halftone filter to generate the screentones and Gimp is mostly used to change image mode to indexed (black and white only) The problem is with gradients. I don’t usually use gradients. But it seems that applying the halftone filter to a gradient doesn’t really work that well. (1/4)
(DIR) Post #Ar9dGYwQ7Fe1sCwM9A by Juankprada@mstdn.jp
2025-02-15T19:33:32Z
0 likes, 0 repeats
The lack of indexed mode in Krita is a real problem for manga production and I wish there was an easy way to work around this. So far I see 3 options for me to try to keep producing manga pages 1. Move the screen tone process to Gimp entirely. This is less than ideal as Gimp lacks many of the features Krita has and brushes would be very limited here but I may need to give it a try to have a better sense of gimp’s capabilities. (2/4)
(DIR) Post #Ar9dGaBhTvSfjt64bQ by Juankprada@mstdn.jp
2025-02-15T19:33:32Z
0 likes, 0 repeats
2. Rely on analogue screen tones. I can still buy screen tones produced by IC or Deleter, scan them and have them as materials I could reuse. This would be the most similar workflow to the fully analogue process as I would actually “paste” tones in top of the image, but I’m not sure about the legality of this. (If someone knows please let me know) (3/4)
(DIR) Post #Ar9dGbHlOruD8ywQgy by Juankprada@mstdn.jp
2025-02-15T19:33:33Z
0 likes, 0 repeats
3. Move to Proprierary solutions. Yeah, clip studio paint is still an option. I rather stick to Krita but if the other options are too cumbersome, I’ll be forced to move back to proprietary solutions. A shame but I need to keep the pace of manga pages produced daily. If there is any other alternative to handle screen tones or working with indexed mode graphics I would love to know! (4/4)
(DIR) Post #Ar9dGbvozvwr9DgQ88 by davidrevoy@framapiaf.org
2025-02-15T20:56:00Z
0 likes, 0 repeats
@Juankprada Unfortunately no easy workaround 🫠 The Gimp method might be the best method, but what a production bottlenecks! i totally understand if it is not sustainable for manga.On my side, i had to give publisher 1200ppi indexed b&w text for my latest comic published. I had to script a inkscape SVG to tiff with imagemagick to provide the files. Workaround, workaround... so slow and time consuming too. 😓
(DIR) Post #Ar9oOQIbEMAKslGVJw by Juankprada@mstdn.jp
2025-02-15T23:00:48Z
0 likes, 0 repeats
@davidrevoy Thanks for sharing this. Now I know I will also have issues with the dialogues 🤪😅Either way I think I found scripting with Gimp instead of imagemagick to be a lot faster and reliable for some reason. I could get a 600dpi B4 page converted to indexed mode in a matter of seconds as compared to the same script with imagemagick which took something around 5 to 10 minutes per pageMaybe I did something wrong with the imagemagick script😑
(DIR) Post #Ar9pBvPoKUTpZrF692 by doctormo@floss.social
2025-02-15T23:09:45Z
0 likes, 0 repeats
@davidrevoy @Juankprada I've had some discussions about half toning in PDF output, but does this information have to be added in before? Previewed?Was it your printer that wanted to mess around with single channel tiff files or was there some inkscape process that isn't possible yet?
(DIR) Post #Ar9ycv4cbiWvvKHJei by Juankprada@mstdn.jp
2025-02-16T00:55:31Z
0 likes, 0 repeats
@davidrevoy Also it seems the issue is more with the interaction between gradients and the halftone filter. I’m not really sure how it behaves but my understanding of the filter is it should map the mid tones between two values as a dithering of “pixels” or points using the two extreme values to create the effect of blending. The problem seems to be that while the “dots” are being produced the mid tones are still being used. Not sure if that makes sense…
(DIR) Post #ArAcfe863cECPMl6H2 by Juankprada@mstdn.jp
2025-02-16T00:56:51Z
0 likes, 0 repeats
@davidrevoy Essentially it creates the dots but (in the case of black and white being used as the extreme values), instead of having dots being either black or white, we get dots being grey! 🙃
(DIR) Post #ArAcff60Ss9NPAmwee by Juankprada@mstdn.jp
2025-02-16T00:57:27Z
0 likes, 0 repeats
@davidrevoy Sounds like a bug to me but I’m not sure about the logic of the filter. Maybe that is how it is supposed to work?
(DIR) Post #ArAcfg62kDm2VZoULo by davidrevoy@framapiaf.org
2025-02-16T08:24:00Z
0 likes, 0 repeats
@Juankprada yes, it works in greyscale and does antialias the dots and do subpixels for the mini ones. That’s for all filters, and normal because Krita not able to do pure b&w bitmap (and a hard limitation inherited of dependencie to LittleCMS for color math, this one not able to manage colorspace like that, afaik). The closest workaround, imo, being to put a contrasted to the max Curve Filter Layer on top of layer stack, over a 8bit grayscale document to at least get a pure b&w preview.
(DIR) Post #ArAjCOkMs1Fzyrezqa by davidrevoy@framapiaf.org
2025-02-16T09:37:21Z
0 likes, 0 repeats
@doctormo @Juankprada I'll try to share a generic idea of my publishers/printers specifications, it’s on my todo since weeks if not months... I postpone because it’s documents under NDA because it’s their internal cooking methods with their own margins, trims, formats, color space, naming convention and all. I need to redraw the examples, and anonymise the data by changing values here and there so I can share something close and still accurate. (And post also FLOSS workarounds). A big work 😅
(DIR) Post #ArAkcRI68NHnM1Q0BM by Juankprada@mstdn.jp
2025-02-16T09:53:19Z
0 likes, 0 repeats
@davidrevoy The interesting thing is, I’m able to get full blacks if the halftone filter is applied to a non gradient base color. Say 50% gray, you can achieve the effect with the filter. But when applied to a gradient it works differently for some reason