This lens is a sleeper. IQ is great for the price. image stabilization seems up to Canon's claimed 4 stop. I've handheld 1/5 sec and have razor sharp images. Vignetting and distortion is easily corrected in post. The 22mm f/2 and 11-22 get all the glory but do not discount this lens.
IS easily 4 stops
vignetting and distortion