How to shoot antique calligraphy and painting? What are the requirements for the lens? How appropriate is aperture control?

It is best to use a fixed-focus lens with high image quality and good distortion control. 50mm, 85mm, 135mm lenses are all better choices. If there is no condition, use a ferrule and try to adjust it to the above focal length. Use a tripod when shooting to ensure that the optical axis of the camera is perpendicular to the surface of calligraphy and painting. It is recommended to use a value between F8-F 16 as the aperture. If it is too large, the resolution of the lens will be reduced, if it is too small. It will also affect the picture quality. Finally, natural light sources are not recommended. It is recommended to use an independent flash with a soft cover for indoor photography, so that the light will be more uniform and the goods will look more beautiful. You can buy a special photographic background curtain, which is not expensive. I'll find a sample to show you. I don't recommend this business. I'm just looking around. Please call me when you confirm the best.