While using the Splendid Camera, one would expect the 'H' hotkey to hide all elements of the UI including the cursor. It does not. Using the splendid camera for video (and for easy still photo ease) is impossible. I don't know if this is a bug or intended feature, but it should be fixed.

Solution 1:
Open Splendid Camera, entire UI is visible.
Press H, and the UI disappears except for the cursor.
Press H again, and the cursor disappears leaving the screen completely free of UI elements.
Press H a third time, and the entire UI becomes visible including the cursor.\

Solution 2:
Pressing H will make everything go away and pressing it a second time will make everything appear.