The two shots from Pachaug that "didn't make the cut" (See Windmills & Waterfalls -- Part I) -- composition was a bit off, and probably one is too soft in the back and the other too sharp.
Canon 50 D, 50mm f/1.8 lens -- 1/30, f/2.0, ISO 100
Exposure -2 in Lightroom
Canon 50 D, 50mm f/1.8 lens -- 1/50, f/8.0, ISO 800
The other thing I just realized, after Liz M. commented that the forefront of the falls looked "soft" is how depth of field is affecting these shots.
Here is a close-up from the f/5.6 shot. I was about 3 meters away, so depth of field was about 30" (I was probably a bit further away and thus a little deeper field). Focus was basically at the top of the closer dam.
Compare that to f/2.0 which had a lot of bokeh in the background, but also meant a lot more of the foreground was also out of focus, The depth of field is only 10" -- way too narrow to get the front falls to "pop" fully.