The Best Camera Upgrade This Week Promises to Invent Nothing

On the counter of a used-camera shop in Shinjuku there is a tray of lens caps nobody came back for, and on Tuesday a student was sorting through it with one hand while her phone, in the other, photographed a Leica she could not afford.

The phone did what phones do now. It took more than one picture and handed her one. That is the mechanism worth understanding this week, because two stories on the wire pulled it in opposite directions.

Here it is in plain words. A modern phone has several cameras on its back, each with its own lens and its own small sensor. When you press the button, the phone rarely just records what one of them saw. It fires several frames, sometimes from several cameras, and software decides how to combine them: which frame supplies the shadows, which one supplies the sharp edge of a hand. The picture you get is an agreement, not an exposure.

ePHOTOzine wrote this week about Photosynthesis, an iPhone camera app that calls itself zero-AI. As the piece describes it, the app takes simultaneous shots from multiple lenses and merges them into one composite that carries both the detail and the context. That is still a combination. The difference is what goes into it. Every pixel in the result was light that reached a sensor at that moment. Nothing is predicted. Nothing is filled in from what photographs of faces usually look like.

The same day, a conference session on the wire called Proof of Human opened with the observation that beautiful images are no longer scarce, that cameras can practically see in the dark and software can correct our mistakes. All of that is true. What is becoming scarce is a picture you can defend: one where, if somebody asked, you could point to the light that made it.

I have not put this app on a phone, so I won't grade it. I would only say that the most interesting camera feature of the week is a promise about subtraction. After ten years of phones adding things to our pictures, someone is selling the absence of that as the upgrade.

The student bought nothing in the end. She put the phone in her pocket, chose one cap from the tray, a scratched plastic 52 mm with a logo half worn away, and paid a hundred yen for it at the counter.