I finally remembered to take this thing outside at night & try it out:
Nice & sharp. One of the things this unit does- the camera, not the dog- is if you have the flash activated, when the shutter button is halfway down, it fires a green laser that shows you exactly where the center of field of view is, so even if you can't see through the viewfinder, you can accurately aim. Very nice feature.
And now I'm tired and sweaty and heading for the shower.