Until then, comment likes "6D center AF point works better than 5D III in low light" is just an imagination.
Marsu42 said:
mastreb said:quote]
Dylan777 said:Photo below was taken today, around 8:30PM California time. 5D III + 40mm pancake, Av mode @ f5.6, shutter 1.3sec, ISO12800. SOOC, no edit, only resized to post here.
This is also a fast lens (f2.8, the af system works wide open), as for example the 70-300L @300mm really autofocuses at f5.6.
As for the scene: Focus capability not only relies on the LV calculated by the exposure, but you also have to have some edges for the af system to lock on and an *even* light distribution. The enhanced 6d af system is beneficial if you for example af on a landscape scenery in ambient moonlight (and not on the moon edges itself).
In your case, you had more than ideal conditions - the candle center would be rather bright, and the book provide good edges - that's why the af worked so fast. If it would have really been the 5d3's ev limit, I suspect the af would have been much slower. The LV calculated from your very uneven exposure doesn't tell us anything.
It's unfortunate nobody ever did a real comparison 6d vs 5d3 on the *same* scene so we could tell if the 6d superiority here is a myth or not.
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