I ordered two of these cameras, and I have noticed that one of them appears to have the focus problem where the focus is off between day and night. This particular camera is setup so that it is zoomed all the way in, so perhaps the issue is more pronounced using the longer focal distance. I started the test with autofocus done during the daytime. I found that the nighttime settings tend to show objects that are closer out of focus, and after refocusing the focus is shifted to be slightly closer in. The focus is then off during the daytime with objects in the distance being out of focus.
This camera has the IR turned off, but there are other cameras in the area with IR turned on. If I turn on the IR on this camera, it reflects heavily off the wall that it is mounted on. I'm not sure why that would happen, but haven't tried turning it a bit to see if the reflection goes away, or if the reflection is perhaps bouncing off the internal glass of camera.
Attached pictures:
nighttime_before - shows picture at night after being focused for daytime. Notice the bushes closer in appear blurry
nighttime_after - after refocusing for night. Bushes are now clearer
20180305_080802_before_refocus - daytime shot using nighttime focus settings. Note the objects in distance are blurry
20180305_080818_after_refocus - daytime shot after auto-refocus. Objects are now all clear