The EF 40mm f/2.8 STM is the total package as far as lenses go. It's compact, inexpensive, sharp, and shows minimal distortion. The STM motor makes it a great companion to the T4i, and the full-frame coverage means that it will remain useful to APS-C shooters if they decide to move up to a full-frame camera. The only real problems with the lens are its focus-by-wire system, which will only bother manual focus shooters, and its f/2.8 maximum aperture—but if Canon had pushed the design to f/2 it would undoubtedly have been a larger, more expensive optic, and likely not as sharp wide open. The advantages of the lens greatly outweigh its drawbacks, earning the EF 40mm f/2.8 STM our Editors' Choice award for standard-angle prime lenses.