How to open images in Windows Preview?

How can I stop Directory Opus from opening all my photos in its own viewer? I can't seem to figure out where to do this in the settings. I want them to open in Windows' own Preview.

Also, (and this is the main reason why I don't like to use the built-in photo viewer) is there any way to make it possible to advance through my pictures with the RIGHT & LEFT ARROWS? It is really unintuitive to have to click on the space bar and/or shift space.


See How to stop the Opus image viewer from being used by default in the Viewer and Viewer Plugins section of the FAQs.

You can do it via AutoHotkey, if that helps.

Other than that workaround, the options are:
[ul][li]Page Up and Page Down[/li]
[li]Space and Backspace[/li]
[li]Mouse-wheel up / down[/li]