fog of war but objects/cliff bleed in

fog of war but objects/cliff bleed in

hi, I'm trying to figure out how to turn off the foreground bleed of objects/cliffs after 51% down a img that happens. i have tried the floor parameter in various spots in the power & without, but seems to do nothing. im trying to make it look like the top portion rather than how the bottom part to look like fog of war/night time.

Attachments: 
Preview
fgbleed2.png fgbleed2.png 585 Kb [0 download(s)]