I recently purchased this lens because it's cheap and I don't own any Canon STM lenses and the technology behind them has always fascinated me so I got the 24mm F/2.8 STM. Another reason this lens intrigued me was it's form factor (it's a pancake lens). I also like to shoot with primes so this lens and I where meant to be.
The silent stepper motor was something that I just needed to test out the second I got my hands on it. I'm happy to report it works well. You absolutely cannot hear it focussing in live view mode (it's great for filming). One of the down sides of this lens is that it's not the best at focusing, don't get me wrong it's it's good but it doesn't compare to the better lenses.
One of the reasons I wanted this lens is because my now ex girlfriend had an olympus OMD-EM-10 with a 17mm prime lens at the time and I was dead jealous about how easy her gear was to carry! I'm happy to report that this pancake has filled that whole in my life. This lens has become one of those lenses that I always have in my bag because it's so convenient to carry.
One of the things I don't like about this lens is that it vignettes like crazy so this lens isn't going to work well for those who don't edit their pictures. Like most wide angles this lens also suffers from distortion but it won't be a big issue for me as I shoot raw and process all my pictures.
Push come to shove I love this lens I've taken lots good pictures with this lens it's a great every day lens to carry on you.
