Like any 2.8mm or 3.6mm camera, you have to recognize the DORI distances and try not to IDENTIFY at 50 feet out. But within the circle of IDENTIFY distance for other similar cameras, it is the same.
Keep in mind two-way audio isn't like talking on a cellphone. It is more like walkie talkie. You cannot hear and talk at the same.
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It's to be used at my gate to talk with courier and by law I cannot film the exterior so basically will film the sidewalk in front of it from an high of 3.5 mt (11.5ft) and the doorbell will be at about 5mt (16.5 ft) so I would like more than 1080p, an 2K camera will be ideal.
Because I am in the other side of the atlantic is not easy to buy loryta or empiretech they don't show in amanzon.es that I'm using so I will have to go for Dahua. I notice that you guys recommend cameras of series 4xxx and 5xxx so I will search for them, there is no point in invent the wheel and I trust in your judgment.
I can but to avoid problems only buy from wharehouses that ship from CEE space, orders wait at customs 3 and more months if they are chosen for inspection.