AF problems with 70D and fast lenses

[Scoobertdoo]

I found this site by google searching 70D focus issues. Mine has the same exact problem as the German ones. With a 50 /1.4, 85/1.8 or tamron 28-75 /2.8 on the body and wide open and using the center focus point. The focus is all over the place. 1 out of 10 MIGHT get focus nailed, MIGHT.

Canon stays in full denial over the whole thing, as you would expect.

 

[MYB]

Hi,
I could try with different lenses. Tamron 17-50mm F/2.8 ( i can't call it test, just a few photos ) no mistake. Canon 70-200mm F/2.8 II ( a lot of photos with different combination ) first not good but after microadjustment it's perfect. Than i retuned my Sigma 17-70mm F/2.8-4 C and tried microadjustment again. Not perfect but better. Maybe AFMA works not very well with third party lenses or i couldn't do it properly.
I figured that with my camera, single ( center ) point af works very good, all 19 point also nice but zone af not sharp. I'm not saying it can't focusing but it doesn't as sharp as center point. AF sensor is same with 7D but maybe system is different and it can't perform like the 7D. Or i'm just new with DSLR
My opinion, I'm sure my camera is not effected.

I'm not good at English, i'm from Türkiye. Sorry if i said something wrong.

 

[felipy2k]

after read billions of users around the world, complaining about the same thing, i'm 100% sure that is a hardware fault and i have no hope of a salvation firmware. I've been testing with 50mm 1.8 and 17-55 2.8 since a got the first soft shot and i notice that even from liveview, if you using quick mode you got even worse results than from the viewfinder. I'm about to sell the body and the 17-55 and buy a 6D with 24-105. Some rumors says, that 7D MK II was delayed to fix this issue!