It’s not so much a niche.
It is more repeat business with established clients. Long term relationships are great, and you might be able to photograph a child’s first day of school, yearly holiday cards, the children’s wedding, the grandkids and so forth.
But…although engagement pictures and a wedding are related, they are a very different business from family photography.
A lot of people will open their wallets for wedding pictures because they are already spending money.
Far fewer will pay for pictures during pregnancy and family events. Most people take pictures of those themselves rather than hire a professional for formal portraits.
It’s not that a photographer can’t do both in theory. It is more that client development and scheduling are so different. Good wedding photographers know caterers and florists and venues. They build networks of people in the wedding industry to find leads and solve problems when things go wrong on the big day.
A portrait photographer has an entirely different business model and networks.