The close-up of 5D2 is very clear. What happened to the virtual focus of the long-distance full-body photo?

There are several reasons for lying; 1, out of focus, 5D2 focusing system is weak, maybe out of focus. 2, poor lens, close-up because the object is very large and not obvious, the quality of the distant object is reflected after the small lens is enlarged, and there will be a vague feeling if the sharpness is not enough. 3. Hand shaking or long exposure affects the focusing speed and accuracy.

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