Bests & Worsts Reviews from Amazon

This lens absolutely blew me away. I have the Canon f/1.2L and used to have the f/1.4 and simply got this to see if the STM version was an improvement from the original nifty fifty. The lens now has a metal mount, which gives it an all better look and a bit more sturdiness in the hand. It is still pretty "plasticky", but you're paying $125 for it, what more do you want? Performance wise I can 100% guarantee you will see little to no difference when compared to the f/1.4, definitely not a $200 difference! The only difference is that you get not even half a stop more of light. If you're teetering on whether to get the f/1.4 or this lens. Get this lens. It may not look as pretty or aesthetically pleasing as the f/1.4, but you will get the same results, and they are stunning. I won't go as far to say it's better than 1.2L, but I don't think you'll find you need any need to upgrade, whatsoever, unless you have an occupation that calls to. Don't forget to perform micro adjustments with your lenses, this back focused so I had to adjust it to -5. Update 6/26/18: I have had this lens for 2 years now and still stand by everything I said above! Because this lens is so light I always have it in my bag and a lot of the time, on my camera. Crazy versatile and still sharp 2 years later.