Got the FF2 few weeks ago. I ordered the camera using the services from CBurket and everything arrived in time and he answered to all my questions...
I put the .3 redlens from waycool on a PC 101 and I don't see any part of the helmet. The lens is even a liittle bit under the cover of the camera!... ( We may see some part of the helmet in photo mode. It seems the view is wider in this mode. )
Yof