White-headed people send black-headed people, can dad take pictures of his son's funeral?

Seeing this problem, I can't help but feel a little sad.

Generally speaking, it is children who take pictures of their father's funeral, but if the white-headed man sends the black-headed man, the deceased has no children, and the father is his closest person, it is not bad for the son to take pictures at the funeral.

If there are any local customs, we can also follow them.