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Lightfield cameras were briefly a thing, but then I guess the engineers at Google and Apple figured they could fake it well enough with algorithms + depth sensors.

https://en.wikipedia.org/wiki/Light_field_camera

It would be cool to see a traditional SLR/mirrorless with a depth sensor, indeed!

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Smartphones had nothing to do with Lytro's death, though; DSLR users ultimately decided that they liked super sharp pictures more than the ability to focus in post.

Not sure how Lytro worked. Was it a one-shot, fast enough to freeze action?

Otherwise there's what we call focus bracketing/stacking which can also allow us to focus in prod.

However, there's usually only one good focus point, so we can do that while taking the picture...

The pinnacle of the multiple camera trend: spanning the entire back surface of a phone, a single light field sensor!

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