20mm F1.4 Art DG HSM for Sony E

Great lens. Very sharp and clear at 1.4. Fast af. Better than all the Canon L glass ultra wide I’ve used. 17-40 f4 and 16-35 2.8. At 1.4 the Sigma is producing clearer pictures than at f4 and f2.8 from the Canon glass.This lens isn’t for you if you on of the people that believe sharp glass is bad because it’s produces too much detail.Image quality is at same level of the Sigma 35 f/1.4, 135 f/1.8 and 105 f/1.4I am use to holding big and heavy glass so the weight and size doesn’t bother me. It feels very light.My biggest complaint is the lens cap. Sigma should’ve added a locking mechanism to the cap, similar to what Canon has on their 8-15 f4 lens. I find when its in my bag the cap from it will fall off. I might consider putting some velcro on it.I tested this on Sony a7r iii and Sony a6000.