Horses for courses... unless you own (and are actively using) a Canon->Sony adapter of whatever variety, this lens still looks more compelling than the adapted Canon.
If I had been using a Sony A7 series camera, I would've looked elsewhere, however (would've gotten the Sony 55/1.8 or waited for the Samyang AF 50/1.4). I have a personal gripe with noisy and slow focus motors - had a fair share of that during the Minolta days (and some distance into my Canon era). Namore of this, for Goddes dignitee.
If I had been using a Sony A7 series camera, I would've looked elsewhere, however (would've gotten the Sony 55/1.8 or waited for the Samyang AF 50/1.4). I have a personal gripe with noisy and slow focus motors - had a fair share of that during the Minolta days (and some distance into my Canon era). Namore of this, for Goddes dignitee.