I was amazed to see the water turning blue after reversing the color.
This is the average set up as I am just learning to do falls. I used the lowest ISO available (-2 on D300 which I think is 50 ISO), a circular polarizer, a tripod and the slowest shutter speed I could (0.3 sec.). I also underexposed by one stop. In PP I darkened the light some more, sharpened it and then reversed it.
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