I'm adjusting its aim now to try and get it aimed a little more towards oncoming traffic.
I struggled deciding how I was going to mount my (2) telephoto cameras, (front & rear).
I finally decided to mount them exactly in the middle at the top of the front & rear windows to split the difference.
I'm glad I did because I can still get oncoming cars, and cars to the right when I'm on the highway in the "center" lane.
As far as horizon line adjustment.
I first tried 50/50 and that did not work very well.
I took Viofo's (Alex's) Instructions and adjusted 60 road / 40 sky and it provided much better results.
I've been meaning to to adjust the telephoto on the front window to look out the back window to see how it would perform in applications like Miata, Porsche, Corvette, or other cars that do not have a rear window to mount a traditional "rear" camera.
One thing I'm not pleased with about my telephotos is they seem to be only "in focus" at 20 Meters.
Everything beyond 20 Meters is blurry.
I reported this to Viofo, and I was told it's just the way the lenses are optimized & adjusted.
I don't know anything about lenses in the first place, but my Sony Action Cam is in focus from 20cm to infinity.
Also getting the angle just right is why I use those standard 1/4 camera ball mounts to get all those wacky angles for interior, and left & right side cameras.
I just have to drill a 1/4 hole in the removable bottom plate under the 3M sticky pad.
It's more labor to drill the hole, but easier later on swapping cameras in / out instead of using a new adhesive each time.
I just got a new 43" 4K Samsung Monitor, and I'm chomping at the bit to gather some new test footage with the new updated firmwares.
I'm ashamed to admit but before I got this new 4K monitor I was using a 32" 720p monitor from 2010 to review all my dash cam footage. lol
I also reconfigured my camera set up slightly.