Forgive me if this is an elementary question; I have very little understanding of optical physics. Asusming that's even what this pertains to. Anyhow, I'm designing a music responsive LED display. The gist of it is that the LEDs will be angled towards the wall slightly, with the intent being to use the wall as a sort of canvas for the light. I know flux somehow pertains to the general light emitted/spread, and intensity to the intensity at the point of emission. Unfortunately, my grasp pretty well ends there. As such, as I go to purchase LEDs, I'm unsure of which of the two is more important for my project (as it seems I can't have a maximum of both for my price range). So my question is such: Which factor (flux or intensity) will create a bolder impact in the context of visibly lighting the wall? Keeping in mind that I don't intend or need to light the room itself, merely create the boldest display on the wall. Thanks for helping a novice!