DSLR Noobe with a 7D, a bit worried !!!

Started Dec 24, 2012 | Discussions thread
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Limburger
Limburger Senior Member • Posts: 6,288
Re: Images with AF problems

ankydu1 wrote:

But one thing I am very confused about is, when choosing single point AF (in the center) sometimes the whole picture is correctly in focus and sometimes a little above the center is out of focus and a little below in focus and vice versa, Why does that happen???

This could be the depth of field using different apertures.

You could try choosing one AF point by composing on a static subject (flower) and moving the single point spot on the subject.

As for the dog, the depth of field is slightly behind it's head toward the body. I think the dog is slowly walking so I'd try single AF or portrait mode (right zone) with low or high speed continious (use the burstrate) and a slightly faster shutter speed (freezes the action, not sure if you want that though).

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Cheers Mike

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