Yea I’m running El Capitan now on an older Mac Pro so it’s good to know that it will work on a newer Mac with High Sierra.
I remember when I switched to El Capitan at first the Canon Photoshop Plugin didn’t work, but I called Canon support and he showed me how to do something during installation of the plugin and then it has worked perfectly ever since.
So I guess High Sierra is the end of the line for Mac and the 8300.
Does the Canon Photoshop Plugin work on Windows 7 and 10. I’ve just never tried the printer on a pc. I have one I use for other things.
John
The latest supported macOS versions per Canon are not gospel. According to Canon, our IPF8000s is only supported through El Capitan (10.11) but I run those drivers with no issues on High Sierra (10.13). Catalina is a whole 'nother ball game due to deprication of 32bit support.