Running two different versions of ACR?

[wk56577407]

Is there any way to run two versions of ACR on a MacBook Pro (Mid 2015)/MacOS 10.14? I currently am using Photoshop CC 2018 but would not mind installing the latest version in parallel (in my earlier experience using two PS versions is possible). Creating a second user does not seem to help. The reason I’m asking is that I prefer the workflow of ACR 12.2 but it does not fully support my new camera. Thanks for any suggestions!

[kglad]

you can download different versions of acr, Camera Raw plug-in installer (adobe.com) but because it's a plugin, unless you have different adobe programs and you're careful, i don't see how you're going to install different versions.

perhaps you want to install 12.2.1 and then use the dng converter for your camera.

[wk56577407]

Thank you – that confirms (unfortunately) what I already assumed. I have 12.2.1 now but it doesn’t process the Pixelshift files from my new Pentax K-3 III. The DNG converter also doesn’t help.

[kglad]

<moved from download&install>

[TheDigitalDog · Accepted solution]

Yes (kind of) once you download and install the actual plug-in's, you can go from one version to the other by moving the plug-in, in and out of the folder it was installed into before launching Photoshop of course. 

See location for the plug-in and manually move:

HD/Library/Application Support/Adobe/Plug-Ins/CC/File Formats

Be careful if you apply NEWER functionality (edits) that are not backwards compatible with the older version. Otherwise you can switch from each as described. 

[wk56577407]

Great, that’s exactly what I wanted to know. Thanks so much.