I made this panned view of Irish Rail class 201 number 212 working up-road at Cherryville Junction on 11 January 2003.
Panning is an effective technique for conveying motion. For this view I used a short telephoto lens and a comparatively slow shutter speed, probably about 1/60thof a second, while moving the camera in tandem with the locomotive.
Key to making an effective pan is maintaining constant speed and smooth motion.
Novice panners may make the mistake of stopping panning as they release the shutter. This results in a jarring complete blur that produces something less than the intended effect.