How do SLR cameras shoot good paintings and calligraphy works in normal light?

Photography can be expressed in many ways. See what effect you want to show. Please refer to the following:

Reduce deformation. If there is no fixed focus, it is best to use the lens with a focal length of 50MM, which is perpendicular to the shot picture.

Reduce the reflection, it is best to adjust the subject on cloudy days, and it is best not to reflect the angle. If there is a shadow, you can fill the light with reflected light such as white paper.

Reduce the color cast, put a piece of white paper on the lens, and then shoot with a custom white balance. Or use an appropriate white balance mode and use automatic white balance as little as possible.

It is best to save it properly with RAW for later adjustment.

If the painting and calligraphy works are long, you can move the camera horizontally to shoot separately and splicing later.

The aperture should be above 5.6 as far as possible, and the shooting should be fixed as much as possible. If you want to hold it, the shutter cannot be lower than1125.