About canon 500D focusing

This question will be verbose and difficult to answer clearly. Say it briefly.

This level of camera is difficult to focus accurately, because out of focus happens from time to time.

First, you should choose the right focus (how to choose the focus depends on your instructions). Generally, the focus accuracy of the camera center is higher, but the edge will be slightly worse. Then there is the right choice of focus. It is best to choose horizontal, vertical or oblique stripes on clothes, or eyebrows, eyes and mouth, and try to avoid monochromatic or light-colored areas.

Another key point is the size of the aperture. Generally, the larger the aperture (such as F2, F 1.4), the longer the focal length and the shallower the depth of field, the lower the focusing accuracy. Therefore, under the condition of not affecting the photo effect, the aperture should not be too large, and it is best to bring the maximum aperture closer by more than one or two steps.

When taking a focused photo, if you don't capture it, check it as many times as possible. You can look carefully through the viewfinder. In fact, whether it is right or not, you can see it from both the middle shot and the close shot. You need to practice this more and adjust your diopter.

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