How to debug Canon 700d to get a clear picture of people and distant scenery?

Basic requirements of landscape photography.

First, try to use a wide-angle lens, the shorter the focal length, the greater the depth of field;

Second, using a small aperture (Av mode), the smaller the aperture, the greater the depth of field;

The third is to try not to focus on the vicinity; That is, the depth of field foreground should not be too close;

Fourth, increase ISO (such as 1600 or even 3200), preferably using RAW format; Because the aperture is small and the shutter is long, it can prevent hand shaking.

If it is a portable computer, the photosensitive element is small, in fact, it is easier to achieve this effect, even if it is the largest aperture.