I've been used to using the high pass filter for all of my landscape stuff, but recently I"ve discovered the smart sharpen tool in CS6. When zoomed out, the high pass filter is definitely more dramatic, but when you zoom in at 100%, the smart sharpen tool seems to do a better job. I've been using the setting of 150% Radius 2 for this filter. Does anyone else use this for landscapes or what settings do you normally use? Is high pass a better option?