welcome... 1 word of advice airsoft and expensive cameras arent best of friends.
bbs shooting just under 500 fps+18x optical zoom camera lense= A trip to blacks!!!
not to discourage you because every airsofter likes there picture taken while in the heat of the battle, but more to use as a precaution. save you that trip to blacks.... im sure someone here can point you in the right direction to finding a way to protect your lense.