PetaPixel

Lesson on SLR Shutters and How Flash Synchronization Works

Even if you know how to operate your SLR camera and external shoe-mount flashes, you might not have any understanding of the complicated, technical mojo going on that limit and affect your photography. This uber-informative lesson by photographer Paul Duncan brings you up to speed on how things like focal plane shutters and “second curtain sync” work.

(via f stoppers)