echelonphoto wrote:
Chris....we are specifically talking about using the camera together with the flash using
the single shot mode....never said the ai servo mode was bad.
In your first post you said \"....the Mk2 is def. faster to acquire...whether you use
flash or not\"...and others chimed in with general statements about specific lenses...or how the 5D3 was slower to AF in low light than the 5D2 (or 5D). I responded in a general way because there\'s a lot of generalizations being made in this thread that don\'t reflect my experience with this camera at all. Perhaps there are other factors or issues at play...I don\'t know.
As far as single shot and/or using the AF assist beam from the flash...I use both frequently and haven\'t had any issues with either. In fact, here in my living room with the 85/1.8 and a 580 EX2 mounted...single shot mode...I just tried focusing on a black speaker cover (extremely low contrast target) at 1/30 @ F/1.8 @ ISO 25,600 light levels. The 5D3 AF locks fairly quickly and very accurately. I repeated the \'test\' a bunch of times with and without the assist beam and it nailed focus accurately every time.
I\'ve done this same \'test\' from the same shooting location with the same lighting with the 7D, 5D, 5D2 and 1D3 and none of them can lock reliably without assist...and they often hunt or are inaccurate even with assist.
I\'m not trying to give anyone a hard time...but all the comments about this camera being poor with low light AF with or without focus assist just have me scratching my head as my experience has been just the opposite...
Nov 19, 2012 at 11:12 PM
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