ROKINON Super Wide Angle Lens - Canon

Here’s the difference between the two Canon lenses:

“Rokinon model AE14M-C is Rokinon’ s newest version of its most popular 14mm F/2.8 Ultra Wide Angle Lens for Canon. It features all of the same specifications of Rokinon model FE14M-C but also has a built-in AE for auto metering with your camera. This allows your camera to automatically select the correct apertures and exposures.”

Decent review at
Performs pretty well for the price, the main limitation being geometric distortion that would be a concern mostly for architectural photography.