How to eliminate spherical deformation in photography?

Perspective distortion and wide-angle distortion are completely different things. Perspective deformation is brought about by the near big and the far small. Wide-angle distortion, also known as pincushion distortion, is brought by lens design, and has always been edge stretching, regardless of distance. The telephoto lens will also have cylindrical distortion, which is a deformation that becomes larger in the middle. Distortion is inevitable, even if there is only a little distortion, the price of the lens will double, because an expensive aspheric mirror will be added (to correct the edge phase difference). Many professional softwares have lens correction function. There is a filter in PS called lens correction, which can repair the distortion caused by wide-angle lens.