AF problem at BIF 7DII

NancyP said:
The batteries in the pro cameras are ~11 v batteries, whereas the batteries in the prosumer cameras such as XXD, 7D, 6D, 5D are ~7.5 v.
I got a pair of spare Wasabi LP-E6 batteries for my gripped 7DII. While I have not experienced AF difficulties shooting swimming, diving, track & field & football, I did have a negative experience with the Wasabi batteries. They are claimed to be chipped for the 7DII but did trigger a weird side effect. With the Wasabi's on board, the 7DII could take up to five seconds to "wake-up" instead of the customary instant response. At first I blamed the camera but there's a thread on CR somewhere where a few posters suggested to me that it might be the batteries. And they were right. No issues with Canon genuine batteries. So quite aside from voltage issues, steer clear of aftermarket LP-E6 batteries if you're after performance and quick response.

-pw
 
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I have this problem and in the first month Canon launched the 7Dii, I went through 3 different bodies, each posing their own problems.

As mentioned above, keeper rate isn't great, as it's normally only 1 or 2 shots of about 10 that are sharp. The problem to me was the pitch Canon used when promoting the camera, effectively calling it a 1DX mini. It is not

That dedicated processor that tracks colours and shapes in the 1DX is a large part of why one gets nearly 100% sharp images, neither the 5Diii nor 7Dii have it.
 
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