I agree with Chan Tran. The camera reacts faster with a high speed motor drive in single-shot mode. For a while I tried a slower auto winder instead of the 5-fps motor drive on my New F-1 figuring that I rarely set it to 5 fps, and the winder is lighter and more compact, but the lag time of the winder drove me crazy, so I went back to the motor drive and its 12 batteries.