What comes back down off the roof is the whole sale
The homeowner cannot verify anything you found, so the quality of the evidence you bring down decides whether they believe it.
A crew member who climbs down and describes damage verbally is asking for trust from somebody who has been warned about roofing contractors. The same person coming down with fifteen photographs, a couple of close-ups and a clear explanation of what each one shows is having a different conversation entirely.
The gap between those two visits is not skill or honesty. It is usually whether anybody decided that documenting the inspection is part of the job rather than an optional extra when there is time.
Standardizing it is the highest return operational change available to most roofing companies. A fixed set of shots on every inspection, taken the same way, landing somewhere the office can retrieve them.
Aerial imagery has made this easier and it has not replaced the close-up. A wide shot establishes context and a photograph of a specific failure is what persuades. Both are worth having.
The report matters as much as the photographs. A homeowner who receives something they can read later, and forward, is a homeowner who can defend the decision to a spouse who was at work.