Moment has the best iPhone lens. Now they have a set of filters and an anamorphic lens for the Mavic Pro 2. Check out their Kickstarter Campaign:
PS: I have no financial ties with these guys.
Moment Air: Anamorphic Lens, Filters, & Cases for Drones
Drone footage will never be the same.
www.kickstarter.com
PS: I have no financial ties with these guys.