I like to convey motion.

Over the years, I’ve made hundreds of pan photos—where the camera moves along with the subject to set the background off in a see of motion-blur.

For slow moving trains, I’ve typically panned at 1/30th or 1/60th of a second, and sometimes a slow as 1/2 second.

The other day at Greenfield in Lancaster, I panned Amtrak ACS64 644 trailing on train 654 at 1/400th of a second. Since the train was accelerating to a speed of just over 100mph, even this relative short shutter speed still allowed for a successful pan.

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