In Depth Canon 24mm STM Review (Lots of Photos) - Film Brute
Canon EF-S 24mm/f2.8 pathetic AF on Sony A5100, cumbersome focus-by-wire MF; still I love it: Sony Alpha / NEX E-mount (APS-C) Talk Forum: Digital Photography Review
Canon announces new 24mm F1.8 Macro IS STM, 15-30mm F4.5-6.3 IS STM lenses: Digital Photography Review