Cameras have become the killer app of smartphones.

In the era of the personal computer, we worshipped at the altar of processor speeds, RAM capacity, and hard drive space. But in the era of the smartphone, none of these items are as important as they once were. Instead, we are more concerned about what their devices can do, and chief among those capabilities is taking great pictures.
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https://www.macworld.com/article/3433784/shoot-to-thrill-three-camera-features-the-iphone-should-add.html