Portrait refers to shooting or scanning the original picture and presenting it in the form of printed matter after processing. Portrait is a high-definition photo made by copying, printing or photographing technology, which can be used in product advertisements, people photography and other fields, and can also be displayed in the form of picture books and exhibition boards.
Ink-jet printing is a basic traditional expression technology in advertising industry. Inkjet is to spray patterns and characters directly on the surface of materials with a professional printer to form colorful and realistic patterns. Generally refers to the outdoor advertising screen output, output a large screen, such as many billboards next to expressway, are the result of inkjet printer output.
Generally speaking, the main difference between photographing and painting lies in the production process, application and presentation effect.