A group photograph; a photo of several people together (e.g., class photo or commemorative group shot).
運動会の後でみんなで集合写真を撮った。
After the sports day, we took a group photo together.
卒業式の集合写真は校庭で撮ります。
The graduation group photo will be taken on the school grounds.
写真屋で集合写真の焼き増しを頼んだ。
I asked the photo studio to make extra copies of the group photo.