Can you make a feature film with an iPhone? Well, "yes" is the answer if you don't mind a slightly fuzzy-looking picture on a big screen, and if you sit far enough away, but you can certainly get a cinematic "look" if you use cinema-type techniques when you make your film, and some software to give your work its finishing touches.
As we saw in my previous article on sensor technology, we can now build sensors with enormous numbers attached to them - if not trivially, at least reliably. Given that current 4K sensors are more than adequate to replace 35mm film in terms of sheer resolution, we need to be careful about turning this into a numbers game.
It looks like soon it will no longer be a matter of choosing between the visual qualities of the Arri Alexa or those of 4K resolution. A recent statement seems to suggest that it might soon be possible to have your cake and eat it