Really like digital IR. I'm thinking of getting the new F717 and using the R72 filter. Does IR work best with polarization? Hope yopost more of your work. The Oly C2100 is used for most of the IR, and the sutterspeeds are about 1/50 sec. One reason for chusing the F717 is the ability to use it for daytime IR with higher sutterspeeds. Thanks for demonstrating the effects of different filters.