Hi @sam.philips,
Selecting items to be ignored by the camera collision is currently not possible in CoBlocks. However, you can achieve this effect via scripting:
//Find the item to be added to the collision filter
let trigger = Scene.getItem("trigger");
//Add the item to the collision filter
Camera.addToCollisionFilter(trigger)
Check out the example below to see how you can combine CoBlocks collision events to check for collision of the trigger in combination with scripting to add an item to be ignored by the camera collision.
Hope this helps!