The Nikon WG-AS2 Water Guard is designed to maintain the D300's high level of dust and water protection, when used in combination with the SB-900 Speedlight flash unit. The WG-AS2 clips onto the flash unit's foot, creating a shield against dust and water.
I have used my nikons in the rain.I just had to make the pictures with my slr's.Performance time and I rarely back down.This adds security and makes a super tight fit.I wish nikon makes one for my D7000 's.No such luck.I 've tried and none of the others I this series work
I haven't used it yet in bad weather but it seems to do what it is supposed to well!
