Went from Pentax M42 mount to the Nikon F mount in 1987. I can't say that I miss 1/2 stop detents. I like the full stop detents, and the fact that I can dial in whatever aperture I need just by moving the ring between detents. It also comes in handy when preparing to shoot something while on the road. Set the body to A mode, move the ring to f/8 (usually, I can do this without looking @ the lens - only time is when an off-brand lens is mounted), make sure that the focusing ring is at infinity, turn the meter on, raise the camera up at the opportune time, and fire the shutter while continuing to look at the road. Did that to get a shot of the fall color on a hillside north of town today.
-J