The light passing through the window often casts an alternating effect of light and shadow. When shooting, you can consciously choose the location of the book, let the appropriate sunlight shine on the book, and then shoot the words you want to shoot on a book, which can better express your views and emotions.
The main purpose of shooting a book is not to let too much sunlight cover the text, but to make the book look warmer after focusing as much as possible, which will make it easier to shoot.
It's best to shoot books at dusk and set a window position. Ordinary mobile phones or cameras can shoot.