With manual focus lenses, you can’t tap to focus via the app. You should be able to focus from the lens and still take advantage of Arsenal 2’s other features excluding Focus Stacking.
With manual aperture lenses, Smart Mode, SmartLapse, Auto Timelapse, Holy Grail Timelapse, and Focus Stacking won’t be possible. You should be able to use any of Arsenal 2’s features that don’t require us being able to change the aperture.
If you have any questions additional questions please reach out to support. They are always happy to help!