When Canon 80d takes a group photo of about 20 people, it is necessary to ensure that everyone's face is clear and not deformed (the previous photos will be deformed and unprofessional).

I'm a design major, so I'd like to give you some suggestions for reference only:

1, use a small aperture, F8-F 1 1 to shoot a large depth of field. There are many people in the photo, usually standing in several rows. If you want to shoot everyone clearly, you must increase the depth of field. Twenty people can stand in three rows, and the focus should be in the middle of the second row. It is best to control the focal length at 50 ends, close to the human eye, and the photographed characters are almost undistorted. Use continuous shooting mode, take more photos, and check whether there are people who close their eyes at any time. If the light is good, try ISO 100 as much as possible to ensure the lowest noise and photo quality. Be sure to put a tripod on it. This is necessary. Turn off the automatic anti-shake of the camera lens.

2. Do a good job of communication and coordination. Because there are many people, it is difficult for everyone to act in unison, so we should have good communication and command, adjust everyone's position and posture in time, and make a gesture when taking pictures.

3. Before pressing the shutter, count 1, 2, 3, but don't wait until 3 before pressing the shutter, because at this time, participants will relax, blinking or shaking their bodies is inevitable. On the count of two, you can press the shutter directly.