I'm wondering, why it is that say for example, I use a Lens flare on a black solid, change the mode to 'Add', and if I were to not have that solid be the size of the composition stage, I would see that the flare does not extend beyond the bounds of that black solid. How can I have it not be bound by that shape? Here's a picture to show what I mean.
I tried precomposing the black solid, and then adding the lens flare to the pre-composed solid but found that it did the same thing. Any ideas?
Don't move the solid. Move the flare itself in the effect's settings.