Hy guys,
I'm new on Mikrotik and realy need a push in this one.
On ethernet I have IP camera with fixed IP adress, and on Wlan I have monitor PC.
How to view camera. I have tried many things, and now I am running out of ideas.

Please someone..

Are you sure you have the correct settings in the camera and computer? Are they on the same network?

I use this same setup at my house and have no problems whatsoever.

No, they are not at the same network. Camera is on lan network, and PC is on the wireless network.
Mikrotik routerboard is working, but I don't know how to bridge both network so PC could see camera on other subnet
hmm...

Can you post /ip address print detail /interface print /ip route print detail /ip firewall export

Camera is on 10.10.10.5 & routerbroard ether card 10.10.10.1
PC is on 1.1.1.5 & routerboard wlan card 1.1.1.1.
Camera is connected with router by cable, PC-s are conected via wlan

what now I must do? Nat rules, bridge, ...

You either need some static routes defined or NAT between the two networks.

You either need some static routes defined or NAT between the two networks.

If these networks are on directly connected interfaces (which it says they are) then the routes will already be there.

If vilim could post the output of we can confirm this.

Otherwise, perhaps default gateway of camera is not set at 10.10.10.1 or PCs defalt gw is not 1.1.1.1
Maybe firewall rules... Need more info.