How to reduce distortion during anamorphic lens?

The methods to reduce anamorphic lens during shooting mainly include adjusting the shooting angle, using auxiliary lenses, post production correction, etc
Adjust the shooting angle
Linear distortion: When shooting tall buildings, keep the back of the camera parallel to the front of the building, or adjust the lens angle upwards to avoid tilting the lines.  ‌
Barrel distortion: When using a mobile phone, it is recommended to shoot away from the subject or suppress distortion by cropping the edges of the image in post-processing.  ‌
Replace lens configuration
Wide angle lens: The main lens of mobile phones is mostly a 26-28mm wide-angle lens, which is prone to barrel distortion. It is recommended to switch to a 2x or 3x telephoto lens (such as a 65mm or 85mm external lens) to reduce distortion.  ‌
Telephoto lens: The telephoto end can reduce barrel distortion, but it should be noted that the focal length converter may cause pillow distortion.  ‌
post-processing
Software correction: Use the "Perspective" tool of Snapseed or the PS panorama tool to correct linear distortion, but severe barrel distortion is difficult to repair.  ‌
Crop optimization: Leave more margin at the edges of the image during early shooting, and remove distorted areas through cropping in later stages.  ‌
Optical design optimization
Increasing curvature: By adjusting the curvature of the lens to balance the distribution of magnification, radial distortion can be reduced.  ‌
High precision manufacturing: High quality optical glass and precision machining can reduce tangential distortion, but cannot completely eliminate it.  ‌