1d mark iv instead of a 5d mark iii

Started Jul 22, 2012 | Discussions thread
XeroJay
Contributing MemberPosts: 971Gear list
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Re: I have owned both
In reply to PhotoKhan, Feb 7, 2013

XeroJay wrote:

the AF is FAR better than the 1DIV

Surely, the fact that it does not occasionally fail to lock is some low-light scenes like the 1DMKIV does is not enough to make it FAR better than an already excellent AF system?

...I mean, apart from the said low-light occasional quirk, I can not see what could have been improved...My 1DMKIV consistency outputs 20 to 23 perfectly in-focus frames in a 22/23 sequence, under AIServo, high-speed drive, with any AF focus point mode selected.

Does the 5DMKIII improve on those numbers?

PK

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Yes, the 5D3 certainty does improve on the 1DIV AF keeper rate: http://m.dpreview.com/news/2012/08/01/Roger-Cicala-Lensrentals-Canon-Autofocus-marketing-claims

It's not just about the keeper rate; it's an all new AF system in the 5D3. The 1DIV was just another chopped up version of the old 1D AF, and canon put so much emphasis on rectifying the 1D3 Tracking debacle that they actually flubbed it in other areas - percision and low light bein the worst. By percision, I don't mean accuracy, but rather the monolithic AF points that woul catch anything even slightly contrasts anywhere in the same hemisphere as your selected AF point. I couldn't tell you how many times I would think the AF had an easy target only to find that the damn thing would hit whatever object miles behind the subject. I got to the point where I simply and literally could not perform group shots with it, having to resort to the 5D2 instead.

 XeroJay's gear list:XeroJay's gear list
Canon EOS-1D X Canon EOS 5D Mark III Canon EOS M Canon EF 50mm f/1.4 USM Canon EF 85mm f/1.2L II USM +7 more
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