Lecture 15: Cameras & Lenses (52)

I was curious what the iPhone camera specifications were. The iPhone 12 has a 26-mm equivalent 12MP sensor with f/1.6 lens. The phone also has a 12MP 13-mm equivalent f/2.4 lens (this is the ultra wide camera). more info


Another way to look at F-Number intuitively is that it is the ratio of of lens focal length to the diameter of the aperture. If the ratio is low, i.e. diameter of the aperture is large, more light enters the camera, resulting in a shallower depth of field. For an individual photo, we might want to "stop down", i.e. reducing the size of the aperture, to capture images with a larger depth of field, for example landscapes, to keep all of the elements of the scene in focus.

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