What is the portrait setting f of Apple 13pro?

"Portrait mode" can keep the subject's face clear, while the background produces a soft fuzzy effect, thus highlighting the subject more. The iPhone 13 Pro series is equipped with a telephoto lens with an equivalent focal length of 77 mm, which is very close to the focal length of the 85 mm "Golden Portrait". Compared with 1x main shot, when taking portraits with 3x telephoto, the main body of the characters can be highlighted and the composition is more concise. The "f" in the upper right corner of portrait mode can adjust the depth of field effect. The lower the value, the shallower the depth of field, and the more obvious the background blur effect. Portrait mode can identify not only the subject, but also other objects, such as photographing food and pets. There are six light effects in iPhone portrait mode, namely: natural light, studio light, contour light, stage light, monochromatic stage light and high-profile monochromatic light. If you don't like the photos taken in portrait mode, you can turn the effect on or off by clicking "portrait" at the top of the middle in the editor. Starting from the iPhone 12 series, portrait mode also supports night mode, which will automatically start when the light is weak, greatly reducing the black paste on the face and keeping the overall environment bright and natural. Note: (1) The background needs some details. If your subject stands in front of a flat wall, there will be no blurring of details. (2) When taking pictures, the distance between the camera and the subject should not be too close or too far. Move the camera according to the size of the object. 0.5~3 meters is the best shooting distance. When the yellow box appears in the scene box, it means that the camera has identified the object that can be photographed. (3) 3) The portrait mode of iPhone does not support continuous shooting, so the model should try to control the expression and keep it stable.