High speed video from last year (2013).
The video was taken to check arrow clearance and cycling as the arrows were not quite matched to the bow. As you can see, the arrow clears the button and rest fine
Taken at Lillieshall National Sports Center by EIS biomechanist Oliver Logan
Equipment:
Bow
Riser- Kaya K7-
Limbs- Kaya K3-
Rest- Shibuya Ultima-
Button- Beiter-
Sight Sure-Loc Quest-X-
Stabilisers