take photos of mom's cooking needs, such as mobile phone, microphone, fill light or SLR camera. The key to a good video is never the late stage, but the material. Many food videos are shot with SLR. Most food videos make the background look blurred for aesthetic effect. This blur effect needs the help of a large aperture. Although the mobile phone also has a large aperture mobile phone, compared with professional cameras, there is still a big gap in the shooting effect.