The first sequence I worked on takes place on the beach just after the mermaid attack. I created the destroyed lighthouse after the explosion of the roof.
There are couple of shots with the lighthouse, all with approximately the same angle. So we gathered all the cameras and calibrated our projection camera to cover all these shots.
The second sequence is the one where Jack Sparrow jumps from the top of a waterfall . The real stage was not scary enough in term of height.
I extended the cliff and use a DigiDouble for Jack Sparrow. I use multiple projection cameras create the cliff and I added rocks in a middle of where the waterfall ends to make it even more perilous.
In the last sequence I worked on, Jack is watching the map on a boat and the camera dives into it to land on the jungle.
Please have a look to the following video to see the breakdown of these shots.