For the aperture value of SLR, we generally use F2.8-F 1 1. What are the shooting apertures F 1 1-F22 and F22-F36?

First of all, the lens aperture above F22 is very small. There is no limit to the specific function of each aperture. The larger the aperture (the smaller the value), the smaller the depth of field, which is generally suitable for taking portraits and blurring the background. On the contrary, the depth of field is large, which is suitable for shooting scenery. Moreover, the focal length of the lens is different and the depth of field is different. You can try more and choose the aperture size according to your own needs.

These are just a few suggestions. The choice of aperture is controlled according to your own needs. Everyone has different requirements for photos, the effect of photos is different, and the choice of aperture, shutter and focal length is different. What you need now is to learn the theoretical knowledge of cameras. Only when you know your own equipment can you take pictures.