Photography is always related to depth of field or what is known as depth of field. How do you do it?
1. Aperture
Aperture is one thing that has an influence. If you use an aperture with a small number (f/2.8), the area in focus will be small , whereas if you use an aperture with a large number (f/22), the area in focus will be larger.
2. Focal length
Usually the longer focal length you use (100mm), the less area is in focus. It's best if you use a wider focal length (24mm), the area in focus will be larger.
3. The distance between the camera and the photo subject
This distance also has an effect, KEE friends. Usually the closer the camera is to the photo subject, the smaller the focus area will be. If you want to get a larger focus area, you can move back away from the subject of the photo.
Easy to understand, right? Actually, there are no standard rules in the world of photography, you can determine everything yourself. Don't give up easily and keep trying!