This is an image taken in Infrared part of spectrum (IR). I used stacked Hoya R72 infrared filter and 8x ND filter. F717 was set to Night Mode since for the IR you have to use a Night Mode to remove camera's internal IR blocking filter. Camera can not be used on manual in this mode (this is specific to F717); you have to adjust the amount of the light to camera's ability to handle it in auto Night Mode (open aperture and 1/60 speed is the shortest possible). That is why you usially need 8x ND (Neutral Density) filter in addition to Infrared filter.

The place is Key Biscane, Miami, Florida