Strange problem with Masks
I've got a still photo of an Italianate garden with a view through some pillars of an area beyond.
I'm trying to create three masks between the pillars so that I can place a cleaned-up Photoshop of the background, to be set back in 3D space to give a parallax effect. A simple enough job for layers...
For the life of me, I can't get the three masks to work at the same time.
I can view through the centre cutout at the background, but if I activate the other masks, they appear to cancel each other out. The three are all on the same jpeg.
Any ideas anyone?