Lee Filters 77mm Big Stopper Kit - Lee Filters 4x4 Big Stopper (10-stop ND Filter), Lee Filters Foundation Kit and 77mm Wide Angle Ring with 2filter cleaning kit Lee Filters Big Stopper Kit! Lee Filters 4x4 Big Stopper (100mm) 10-stop ND 3.0 Lee Filters 100mm FK Foundation Kit & 77mm Wide Angle Ring The BEST kit for Long exposure photography! Foam Gasket for a light tight seal