Family photo sizes are generally divided into the following categories:

1. 5*7 inches: it is generally called 7 inches, which is a common size for 2-5 people to shoot.

2. 6*8 inches: commonly called 8 inches, it is a common size for 3-6 people to shoot.

3. 7*9 inches: commonly called 9 inches, it is a common size for 4-7 people to shoot.

4. 10* 12 inch: commonly called 12 inch, it is a common size for 5-8 people.

5. 12* 14 inch is generally called 14 inch, but 8- 10 people use it more.

6. 16*20 inches is generally called 20 inches, but 10- 12 people use it more.

It should be noted that the number of people is only for reference, and the specific photo size needs to be determined according to the number of families and the shooting distance.