If the photographer won’t oblige you, offer them monetary compensation
Cold hard cash seems too much like a bribe, so consider a gift card. Photographers, too, are tempted by bourgeois pleasures, so take this into account. “Would you be willing to take my pic in exchange for a $25 gift card to Sweetgreen?” How could they turn down literally 1 click in exchange for 2 salads?
[Photo via @jenyakenner]