Nice shots.Really like the second one. Never thought about making a run to Ludlow Falls. Just about fell off my chair when I read the subject line of your post. Thought I was the only Dayton area person on here..
If you have the time make a trip to the Cedarville Falls just north of Xenia on SR. 42.
I'm posting this stuff as I go through my old pics and digitize them so I'm going from memory.
I know I took this before I bought the F4s so it was taken on an N8008s Nikon and I remember I shot it at f16 Kodak 25 speed color film when such a thing was possible.
I remember bracketing and I BELIEVE these were 1 sec exposures. As you can see the water was not very deep at the time.
The lens was a Nikkor 70-210 f4 AF, which BTW I wish I would have never got rid of.
I wish I could be a little more certain on the settings.