Canon EOS 7D Mark II AF Guidebook Available for Download
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I find the list of what lenses will do what with the AF is very confusing. For instance, why is the EF 35-105mm f4.5-56 USM down in Group G, where only the 5 centre points will work? What can we expect with third party lenses like the Tamron 150-600 or the recently announced Sigmas?
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John Strung said:
Not all lenses can use all 65 AF points. Lenses with f stops equal to or bigger than f/2.8 can but the next group can only use 45 of 65.
I doubt Canon will provide numbers for third parties. Sigma and Tamron can so their own homework.
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But there doesn't seem to be any rhyme or reason as to what lenses fall in which group. For instance, why is the brand new EF-S 10-18 4.5-5.6 way down in Group E when other 4.5-5.6 lenses are up in B ? Or why is the 35-105 4.5-5.6 all the way down in Group G?
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John Strung said:
I have the 7D2 pre-ordered specifically for use with the tammy. If it doesn't work that would be a deal breaker for me. From the many posts I've read related to the tammy and focus issues it seems 1) more people reported focusing problems with the original 7D than any other model and 2) it has been mentioned many times that at least the 3rd party lenses report F5.6 to the camera and not the actual F6.3 just so auto-focus will work.
The tammy works fine with my T3i so the thought of it not working the the 7D2 never crossed my mine.
Rod
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I have one too, so I am hoping it works. I guess the question may be how many focus points it will work with.
As far as I can tell, with the 7D it seems to work with the centre 9 points only.
As far as I can tell, with the 7D it seems to work with the centre 9 points only.
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I wonder what group my Sigma 150-500 falls under, I suppose I can live with not all of the cross type focus points being utililized for whatever reason :
but then not having all 65 focus points available is not acceptable. The whole reason that I want the 7D Mark ll is because of the autofocus system, 10fps and that the focus points extend further out to the edges, which is great being that I photograph birds.
As far as birding/wildlife photography goes I don't care to see reviews with $10,000+ Canon prime lenses we all know they'll work great, what I wanna see are reviews of third party lenses and how they work with the 7D MKll such as the Sigma 150-500, Tamron 150-600 etc...Hope someone can do a test before the camera is released or at the very least Canon should release what third party lenses fall under what group.
Having second thoughts on my pre-order now :-\
but then not having all 65 focus points available is not acceptable. The whole reason that I want the 7D Mark ll is because of the autofocus system, 10fps and that the focus points extend further out to the edges, which is great being that I photograph birds.As far as birding/wildlife photography goes I don't care to see reviews with $10,000+ Canon prime lenses we all know they'll work great, what I wanna see are reviews of third party lenses and how they work with the 7D MKll such as the Sigma 150-500, Tamron 150-600 etc...Hope someone can do a test before the camera is released or at the very least Canon should release what third party lenses fall under what group.
Having second thoughts on my pre-order now :-\
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Doesn't work. Apparently you need a very new version of acroread and an operating system where it's supported (excluding all of mine). :-(tech6477 said:
(The full manual opens easily enough, however, as does the old 5Dmk3 AF guide.)
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flyingSquirrel
Extreme Nature Photog
It looks like 99% of the AF settings are the same as the original 7D (the shutter / focus priority, AF point modes, etc etc). That said, this AF system clearly will kick the crap out of the original 7D in terms of actual performance. Also, I like some of the new features of the camera, particularly what is shown on pg 44 and pg 46. I can't wait to have this thing in my hands.
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