marteau

I did not test too many things. I got an old 1.8.6 copy of Publisher from my other computer to get to work on more urgent things. Attached 2 of the files created on a previous version that I can open in both version but can not save or save as in 1.9.1 (JournalLaFenetre....afpub). Also find a file that I can no longer open : it crashes 1.9.1 and freezes 1.8.6. (SondageStLele-2021.afpub) I created a new file on 1.9.1 to copy content from the old (JournalLaFenetre...). Attempts to copy TOC from old to new makes 1.9.1 crash. Attempts to fiddle with copied text styles in the new file makes 1.9.1 crash. Also included, 3 copied text from crash reports. Maybe it's a bad font file? Have a nice day! JournalLaFenetreMars2021.afpub JournalLaFenetreDecembre2020.afpub SondageStLele-2021.afpub Crash-1.9.1-on-copy-TOC.rtf Crash-1.9.1-on-open.rtf Crash-1.9.1-on-save.rtf

Had "crash on save" or "crash on save as" in 1,9,0, for one perticular files created in earlier version. Got to work on the file on another computer with 1,9,0 fine. Now with 1,9,1, so far all files I tried to open and modify crash on "save" and "save as"... Got an iMac 2012, stuck on Mac OS Catalina, now at 10,15,7. Need Help

Ok... reporting back on my print test of Affinity's halftoning. I created a CMYK separation of the original file from Affinity from witch I obtained 4 grayscale .tiff files for C,M,Y and K. Files were 20 cm high at 1000 ppi. From theses files I obtained halftone renderings for film positive from Affinity and Photoshop, with the classical halftone screen angles for each color : c : 15 degrees, m : 75 degrees, y : 0 degrees and k : 45 degrees. Since I had space on the screen, I also created a third series of halftone files with Photoshop to test something else I read about once : using 22.5 degrees for all halftone screens. I am posting photos of the result. Keep in mind that it is a fairly small image (20 cm high) for a 40 lpi print, and I am still quite new to printing CMYK and colors are not that good. I am still adjusting my inks, stroke etc. Halftone was set to oval 40 lpi in photoshop, and cosinus 25 dot size in Affinity (I assumed that 1000 ppi devided by 25 dot size giving 40, it must be a good approximation of Photoshop's 40 lpi) It is fairly easy to see that the print from the Affinity halftone has a subtle blur over all and in fine details. It was also much harder to reveal the Affinity halftone's fine dots in screen than the Photoshop halftone, as if the smallest dots from Affinity at 25 dot size are smaller then Photoshop's smallest dots at 40 lpi. One thing to note regarding that last point : Photodhop's dots are oval while Affinity's are round; maybe this explains that. Also, the Affinity halftone seems a little less intense, or dense, than the Photoshop one, on print and looking directly at the film positive. Lastly, but unrelated to the Affinity halftone question, having all CMYK halftone screen angles set to 22,5 degrees did give a cleaner result with no moire or other banding effect to the print. There is actually more patterns and banding with the print from the Photoshop halftone with c : 15 degrees, m : 75 degrees, y : 0 degrees and k : 45 degrees angles. So here is me still hoping the Affinity team will spare some time making the Halftone filter adequate for screen printing. To that effect, I would suggest : lpi instead of dot size, oval cosinus dots, the possibility to have integer in screen angles (22,5...) .

Yeah... I guess that you looking into it is kind of Sullyman's and my hope. Wether the filter was intended solely for graphic effect or not, it is certainly to the user's advantage that it does both provide a nice graphic effet and also a way to reliably "live" halftone a piece for more rare outputs methods sush as screen printing. Obviously there are much more pieces to the puzzle of preparing a graphic for screen printing, but most of the other ones, at least for CMYK printing, such as separations, color management and adjustments, are readily feasible and reliable in affinity.

Thank's Chris It makes sense that the filter adjusts according to zoom level when viewed from Photo, but please note that the accompanying image I posted is a Photo .tiff output of a .tiff file opened in Photo and live halftone filter applied. No resampling occured. Original file is 25 cm height at 1000 ppi. Output .tiff is the same. Comparing the 3 outputs from Gimp, Photo and Photoshop, size kept the same in all situations, with the same original grayscale .tiff, it's fairly easy to see there is a sort of blur in the Photo output compared to the other. I outlined some of those that seem illustrative to me with red circles. Mind you that I do understand that the Photo filter was probably not intended to create screen printing output, but probably more as a graphic effect filter, Also mind you, I really like the way the Photo halftone filter handles the intensity and contrast from the original grayscale. Much closer to what I would expect. Gimp, in comparison, preserve the details well, but significantly darkens the output, as if I would need to apply some curves to the original before applying the halftone filter. Lastly, also mind you that the comparative blur of the Photo halftone filter is apparent all the way from the computer screen to the revealed screenprinting screen. I still have to print a full cmyk test of all 3 halftoning method. I intend to create the 3 images on a same screen from the 3 halftoning methods and do a test print of it. I just reclaimed 4 screens this morning for the purpose of that test. Regards

Happy to see this topic has been discussed before. Hoping my input will help the issue noted be adressed... I was also looking for a way to output film for screen printing without Photoshop. I was overcome with joy when I realised Photo had an halftone live filter. But in effect, the halftone filter does seems to add some sort of blur. Mind, I did not attempt to screenprint with it yet, but looking at the halftons output from Photo, some details seem lost or blurred, as compared to one done in Photoshop or Gimp. Photo’s filter also adds a dotted line around the output. I join a file with the halftone output of 3 of the 4 ways I found to output halftone so far. With Gimp, that has a filter that creates halftone, Affinity Photo and the live halftone filter, and Photoshop with it’s bitmap image mode. The image is 25 cm high, and the halftone is 40 lpi or equivalent (as far as I could tell, only photoshop offers an actual LPI setting). All halftone were created from the same grayscale image, witch is a seperation of the K component of the original image I did in Photo and exported as a.tiff. Apart from some visible differences in density and contrast between the renders from the 3 programs, I outlined some areas with red circles where I see the blurring of details occuring. On a last note, I will test print in CMYK the 3 halftoning methods for that same image and report back...