or RR or trains. This was the last of a very unusual day shooting a very different mixture of things with just one lens. The 180mm AF-D ED f2.8 Prime. I shot Pelicans, (bird forum) flora and flowers (photos over there) and finished up the day taking pics of this fast moving coal train (around 45mph estimated). A very unusual day. I purposefully went out with just one lens for fun and weight, and I handled nearly everything I tried to take a photo of. here are three in a row, AF-C f4 on the aperture, JPG, Auto WB -2, D70, and I took a series of about 20-30 shots from way down the tracks to right on top of me, and the "slow" focusing AF lens and "slow" focusing D70 did just fine on this moving train. All shots were in focus. I Shot right along side the tracks, I plan on taking care of the flare from the headlights sometime in PS. Never thought about that problem as the train was plowing towards me. lol number 2 is my favorite. Love the exhaust and dust blowing.