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rprouty wrote:
I find it hard to tell from a few posted shots. If I go out and shoot a thousand shots and find some sharp and in focus then I can claim that camera is great for birds in flight. "I'm in no way suggesting that's what the original poster did."
We have no problem with our 1DIII or 1DIV and have no immediate plans on getting a 5DIII.
A few random comments--
First, going along with the quote above, it is very difficult to make an accurate assessment of a camera's ability to shoot action from a handful of photos posted on the internet. Such photos give no indication whatever of the camera's ability to track a moving subject over a period of time or of what the keeper rate of in-focus shots is.
Further, much of the success one has shooting birds-in-flight or other action depends on the level of skill and technique used by the photographer. Over the years, I've had excellent results shooting action with cameras like the 20D ...when I was able to successfully lock in focus with the center point and to successfully keep the active focus point(s) on the subject. On the other hand, when I haven't done my job and properly locked in focus or when I haven't been able to keep the active focus point(s) on the subject, I've had miserable results with 1-series cameras. I know that AJ is an experienced and very capable wildlife photographer, and he has taken outstanding photos with both 1-series and non-1-series bodies.
Also, I'm not sure that I know what leads some who have posted to have such a high level of confidence that the 5D Mark III and 1DX AF systems are going to perform at comparable levels. Just because the two auto focus systems share much of the same hardware and have the same arrays of focus points means very little with regard to concluding that the two systems will perform similarly. Differences in processing power and AF algorithms (which might be necessary because of the differences in processing power) could well lead to very different capabilities of the two AF systems. While I'm confident that the 5D Mark III AF system is a major upgrade from that of the 5D Mark II and other previous non-series cameras, I'll be surprised if the 1DX AF system isn't at a whole level higher yet in terms of its ability to capture fast action. With a $3300 price difference between the two cameras, I'd be disappointed if that was not the case, and I'd expect that differences in AF capabilities will be one the distinctions that will continue to allow Canon to justify that price difference.
I fully expect that the 5D Mark III AF system is an excellent one. I would expect that it would be at least somewhat more capable than that of the 7D, which also had an AF system significantly more capable than that of any previous non-1-series body. On the other hand, I will not be shocked if the 5D Mark III AF system is not at the same level of capability for shooting action as that of the 1DX or even that of previous 1-series bodies. To be confident otherwise is likely a case of wishful thinking and cognitive dissonance.
Les
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