i'm having a hard time picking an UWA lens for my 5Dc, i'm a portrait/wedding/person shooting type. Not very often i shot for landscape but if i go travelling i will take the shot anyway. Every time i look at the zeiss sample images i'm amazed! every single picture i think its an amazing shot. just wow!
my question is for who own this lens,
1. do you guys missing the lower length of the other canon zoom lenses(16-35 or 17-40)? does it really needed to get to that lower length with that much of distortion(if i shot a person or two)?
2. is it that hard focusing to a person when shooting wide open in low light with Manual Focus @f/2.8?
and question for all
3. If you just focus shooting a person with an UWA lens what do you recommend? ZE21? 24LII? 16-35II? or just go with 17-40?
any recommendation is welcome, thx,.. 



