The primary camera of the ZenFone 5Z is failing to focus anything that is beyond 5cms apart. The focus mechanism works only to be able to focus between 3 to 5 cms range (checked by using both auto and the pro-mode). This symptom started to happen immediately after the latest over-the-air software update (Android 10 WW_100.10.107.87_20200520).
The other cameras, however; seems to be unaffected and works perfectly (since their focus is predetermined and set to 'infinity'). It's only the primary camera (the only camera that has variable focusing capabilities) that fails to focus on things properly. This is not only happening in the main camera app but also the other applications that accesses the main camera.