Originally posted by: jpeyton
With more people chiming in about real world usage, I've read several accounts about the 5D2's sub-par AF. What it boils down to:
1) The center AF point is the only one worth using on a regular basis.
2) AI Servo performance is poor.
3) Poor performance in low-light, with wide-open apertures, with lightly-textured subjects.
Of course the AF situation is only made worse by the fact that Canon refuses to add the extra $2 worth of parts necessary for a built-in AF assist light, or trickle-down their pro-level AF like Nikon does.
Though not as accurate as the center one, all the AF points are 'regular basis' usable. I found all the AF points to be okay as long as I use slow (f/2.8 or slower) lenses. This is not to say they're all good; what I mean is that they you're at least 'regular basis' usable.
One thing I noticed is that the center AF is a lot better than 5D and I think it's up to the level of 1d/1ds series.
AI performance is nowhere near the 1d, 1ds line ups, but I found it to be quite okay. Keep it mind that I'm not a action photographer.
Low light performance does work better than 5D. I forgot what Canon calls it but unlike 5D, 5D mk2 has abilty to detect(?) light sources allowing AF to compensates with it. Based on my experiences, it does work nicely.
Having said all that, keep it mind that I was a 5D user and my being used to poor mechnical quality of 5D makes 5D mk2 such a better camera in that regard. Had I been a 1D/1DS series or Nikon D700/D3/D300 user, what I've said might have been different.
Originally posted by: Loreena
How is the video from this cam though? I know you cannot take long videos like a full blown camcorder but for those 30 second wildlife shots and the fact you can use any L glass makes it sound attractive for doing high end video and not spending tons more on a professional camcorder.
The video is fucking great. Please not that it's not just great but fucking great and this is coming from a person who's seen the video connected to a 24" monitor. I can't imagine what it would look like 40~60" TV.
