Zeiss Vs Canon on 5D

I'm considering the zeiss 85/1.4 AND 35/1.4 for my Canon 5D.
I prefer manual controls so its not an issue that I won't untilize auto control functions etc. Therefore the only relevant issues are optical quality, price and build quality comparisons between the zeiss lenses mentioned and Canon alternatives. Who wins?
I need edge to edge sharpness at wide open for low-light work and large print output.
Also are zeiss fast wides in general better than canon ?
Any experiences out there? Options and further considerations?

Welcome ...

http://oomz.net/mf/ is a great source for info on Zeiss and all there seem very open minded about the relative merits of different brands.

I have three old Zeiss jobbies and I have to say I am very happy with them all but I know nothing about modern offerings. There are also several other users here so you should hopefully get some ideas. Do a search as there have been several threads. Buze is a good resource as he has good Zeiss and other glass as well as some very fine Canon stuff.

I've heard of the superb quality of Zeiss lenses...........Howev​er, how about the Canon 85 and 35 L?? They are just as good (I think).......and they have AF.

Ro1

Here is the link to a very interesting thread of this forum about this lenses coming from the "red" side. I did bookmark it. I hope it helps to clarify you:

https://photography-on-the.net/forum/showthre​ad.php?t=70506

there is no comparison with Zeiss lens to Canon lens. Zeiss are just beyond what Canon can make. Leica and Zeiss comparison is definately interesting.

most of the C/Y lens are excellent, pricey... 21mm Distagon f/2.8 C/Y is around $2400-$2600. But it will out resolve the 24mm L 1.4 (even at 2.8).

Well, actually if you can deal with the size and weight issue, The 35L rates a 4, ZC 35 rates 4.3. The 85L rates 4.6 as does the ZC 85 1.4, but the 85L is a 1.2. That's what photodo says anyway. I have both the L's and although they are rather large, they are about as fine of optics I have used and both work very well in MF. Any other focal lenght and I would say go with the Zeiss, but the Canon 35 and 85 L's are hard to beat. There are a bunch of people that shoot Leica and Zeiss on the Fred Miranda Forum, so you might do well to check out their alternative digital forum.