You need to create a new SSID for your cameras if you want to use a different VLAN .
In WVC54GCA Cameras there is an option to configure the fixed IP address as well as DHCP. You can choose DHCP if scope is defined on the ASA firewall for the cameras (New VLAN ) . Otherwise you can configure static IP address to each camera.
You also need to create a wireless profile with exactly same configuration as AP.
Means the SSID name , Network Type,security and the encryption should match in Camera's wireless settings.