I don't doubt the 5d3 would focus as fast as a 1dx if it had the same amount of battery voltage output. Canon states this fact about the diff with 1d bodies being battery voltage. That's probably why you don't see battery grips work with the 1d series batteries as they would make the focusing equal speed probably. The two smaller batteries do not increase voltage at all.spinworkxroy said:Like i said when i played with the 1DX, i was ONLY looking out for 1 thing..the AF speed. And it wasn't my camera so obviously i could play with it for a longer time.
From the moment you press the shutter to the time you see it flash red…on the 5D3, it takes maybe slightly under 1 sec.
On the 1DX, it's immediate….that's the big difference…1 processor vs 3 processors i guess…that's why i say the 1DX will be great for sports, not that the 5D3 isn't good…it's for a specific target audience that need that AF speed shooting things like the Olympics.the AF speed isn't going to mean anything in general shooting or landscapes etc…you don't need that AF speed..
On another note.
The more i look at settings and test things i find the settings are very specific. Each setting isn't just there to offer diff options, they are literally major changes in how your focus system responds to input. Like spot focus is a bad idea unless you literally are trying to shoot thru something to focus on something else. To be honest if i had owned a 7d like most of the people I hire shoot I would be ahead of the game in understanding how these new settings work in application. I have set out to understand as much as humanly possible about this AF system and as a result have no doubt i will be able to maximize it for many diff shooting situations. While some would like straight forward focus point systems like those who shoot 1D series cameras know you can dial that camera in to the n'th degree to get very specific results, to be able to do that on a 5d is a dream and yet some settings missed leave me wanting but not to the point of needing a 1dx.
While i had my micro adjustment settings set to off, they are on again and in testing using the canon eos utility, i found my 50L needed +3. To be honest this camera in single point focus is beyond stellar now.
the 24L is also +3 but my 70-200L is spot on.
I just realized I hadn't tested the 24-70 but then i have never had issues with that one working on all my bodies.
Here are some of the resources i have been combing that may help you get the results you are looking for.
This one is canons 1dx Af PDF guide which is pretty much almost exact to anything you can do on the 5d3
http://learn.usa.canon.com/resources/articles/2012/1dx_guidebook.shtml?categoryId=12
for direct download of the PDF
http://downloads.canon.com/CDLC/EOS_1DX_AF_Guide_CDLC.pdf
These are from the Canon Learning center
http://learn.usa.canon.com/resources/articles/2012/5d3_multiple_af_points.shtml
http://learn.usa.canon.com/resources/articles/2011/1dx_af_config_article.shtml
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