Write the licence first
Payment is not assignment.
In the US the photographer owns the copyright. Paying the invoice does not transfer it.
United States copyright law vests ownership of a photograph in its author from the moment of creation. It passes to a client only by a written assignment, or where the work was created under a written work-made-for-hire agreement. Paying for a shoot buys what the parties agreed it buys, which in most cases is a licence to use the images for a defined purpose — not ownership. Clients routinely assume the opposite, and the assumption is only tested when they try to do something new with the material.
The friction usually arrives second-hand. An agent commissions photography, the listing sells, and the images are then supplied to a portal, a franchise network or a developer's marketing team. If the licence never contemplated that, a reuse that felt obviously fine was outside its scope. So we state the scope, term, territory and permitted media before work starts, and ask at the quoting stage where the material is actually going to end up.
The aerial side has a different but equally under-discussed asymmetry. Commercial drone operation requires a Part 107 remote pilot certificate, aircraft registration and Remote ID, with prior authorization in controlled airspace. An operator flying without those is breaking the rules, and the person who commissioned the work carries exposure too — a point almost never raised when a cheap quote comes in. We fly certificated, we obtain authorization before the flight, and we stand down when conditions or airspace say so, whatever the schedule wanted.
Payment is not assignment.
The client is exposed too.
A flattered property disappoints at the viewing.
Free, and including an airspace check for aerial work.