How to set the camera to make the photos clearer?

The simplest method is to adjust the sharpness, and the greater the sharpness, the clearer the effect, or use backlight or side backlight to make the effect clear, or use small aperture f8, f 1 1 and so on.

Or deepen the contrast, sharpness, contrast, 400D can be set, you try, these points have to be changed, the photo will rise to a higher level.

Aside from the quality of the lens, the image quality will be better if the lens is good.