> Filming a movie on an iphone is just using the camera. Not really. And this is why native apps are necessary. You can't use the built-in camera on an iphone

> Filming a movie on an iphone is just using the camera. Not really. And this is why native apps are necessary. You can't use the built-in camera on an iphone successfully in this way, and I don't know any director who has. They use specialized third-party apps which give them the appropriate control.