If you're just using HDMI cables, we've managed to stretch cameras out to around 15 metres with a quality cable. If you use HDMI->Twisted Pair externders, you can get much greater distances (and different extenders will give you differring distances, but usually are around the 50m mark for full HD). We successfully do that in a number of our rooms.
Obviously, as the control is done over Ethernet, the usual 100 metre limit applies to that as a pure "Cat6" copper cable run, but you can go further with Fibre or with additional active equipment if you really need to.
Wayne
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Wayne
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