The halftone filter layer does not give the ability to specify lines per inch, and it has round dot option but not elliptical dot option. For screen printing, you need to create halftones at specific lpi, dot shape and angle to get proper results with different screen fabric mesh counts. Also, using the filer layer but then adding threshold afterward would create quite imprecise results. There are separate RIP software options that can apply halftones at the point of sending the file to the printer, but that adds further cost so lessens the value of switching to Affinity vs giving in and paying the Adobe monthly subscription, which I in no way want to do (I just had to finally retire my old MacBook which had old enough version of Mac OS X to keep running my old, paid for versions of Adobe software). Affinity seems like a great option, I want to support them but the lack of this one very old, simple feature is a glaring problem.
Dead Bat Designs got a reaction from walt.farrell in How to create precise halftones using Affinity Photo