The centre AF point focus on the 6D is one of its strong points. I have 2x 6D bodies for my work, and have yet to have bad focus with any of my lenses, L or otherwise.
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He does a lot of landscape, low light (high exposure), some sports photography.I trust my 5DII in no light implicitly...it has never let me down in this regard, and focuses in virtually no light whatsoever without hesitation. I get more focuses in very low light with 5DII than with my 7D
Landscape and low light will be excellent with the 5DII. Sports will be a challenge with the 5DII's rather poor AF system (AI Servo tracking, in particular) and the relatively slow frame rate. Still, it's a great camera.
The 5D2 AI Servo isn't THAT terrible. Terrible compared to 1 series for some circumstances but otherwise it does AI Servo better than any rebel, any xxD camera, and, IMO, overall, even better than the 7D which can get rather erratic at times for football and soccer. The 5D2 AI Servo can get a bit slow and wacky when your subject is close in though. For a somewhat more distant subjects it sometimes does as well as a 1D2. Not saying it is amazing or anything, but in the Canon world only the 1 series and the 5D3 do AI Servo any better.
It's trigger response time is a bit on the sluggish side compared to some xxD,7D,5D3, 1 series though and it's fps is very slow compared to xxD,7D,5D3, 1 series, it feels like a sloth crawling through molasses after handing the others right before it.
If you need to use AI Servo with something other than center point then it's pretty awful and 7D, 5D3 and 1 series are all vastly better (even some xxD are probably better then (if not very good at all themsevles)).
The issue with the 7D is that the focus point is too big so careless pointing gets an OOF image (especially when pointing through gap in trees etc
Lol 5d2 is a smooth-bore musket in relation to the near pin-point accuracy of my 7D. If you want good AF the 7D is your best bet unless the 5d3 AF or 1D series AF.
I dont think so - the focus point of the 7D is much bigger than that of the 5D2. Better AF maybe in terms of focussing and focus points - but the size of the focus point was most of the cause of 'soft focus' issue of the 7D
I disagree, have you read the manual? There is the Precise single point selection that is tiny for precise AF on the 7D. Hasn't let me down and the 5D's AF has plenty of times.
Well my 5D2 blew away my 7D in a super incredibly low light indoor one shot focusing test and I trust it a little bit more in general for center point one shot and even for AI Servo if the subject isn't too close and center point with assists can be used, under quite a few lighting conditions.
Interesting, because I can use any of my AF points on the 7D in no light scenarios w\ assist beam and get sharp photos and shoot wide apertures not worrying too much about focus recompose. No need to worry about which AF point to use, as they're all excellent.