Is this connected via ethernet ports?
Without Mikrotik I always did it with multiple routers or virtual routers, like your setup.
Maybe have a look at this. Using routing-mark you have multiple routers in Mikrotik, which can handle identical IP addresses differently.
http://forum.mikrotik.com/t/port-to-interfacing/97096/1 … supposing your camera has IP address 192.168.0.2, it should be readable.
(Credits got to Sob, and extra info must come from him. I’m also new to this. Even found it via Google here: https://gist.github.com/0x4C4A/3ba83e2e26cddd75c35e2bf6ee6e60d4 )