When taking pictures in aperture priority mode, just set the aperture size and set the aperture to the maximum. The shutter speed is automatic, so it doesn't need to be set. Just set the sensitivity to 100. Do not move the remaining settings.

A camera, referred to as a camera for short, is a device that uses the principle of optical imaging to form an image and records the image with a negative. Many devices that can record images have the characteristics of cameras. A camera is an optical instrument used for photography. After the light reflected by the shot scene is focused by the camera lens (scene lens) and the shutter for controlling exposure, the shot scene forms a latent image on the photosensitive material in the camera box, and forms a permanent image after being developed and fixed. This technology is called photography. Divided into general photography and professional photography.

Portrait is a plane or three-dimensional description of a person as a whole, which is mostly a combination of light and shadow, such as face, eyes, nose, mouth, ears and eyebrows. Sometimes it is also a description of a person's limbs and whole body, which refers to a person's general outline.