I checked all my other R-ZE's now. None of these has problems with the focus.
While checking my cams i recognized a gap between the top and bottom of the cams body. I thought a srew wasn't tighten well. When i was trying to tighten it, the gap become a little bigger. So i disassembled all three srews and had a look inside. One of the threads is not drilled into the bottom base. So the screw can't fit into and spreads the case.
I can not understand why this part was assembled at Dahua. One who assembles the parts should recognize this and use another part. This way the cam is not water resistant and i'll get at least dust on the inside of the glas which covers the lense.
@EMPIRETECANDY: do your guys quality control before shipping, or are the items ship out as they arrive from factory? Could you send me a spare part of the top base and i could exchange it myself, or will i have to send the whole cam to you, which would cause me shipping costs?
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