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A comment on Why are modern 50mm lenses so damned complicated?. Parent comment

Re:Why are modern 50mm lenses so damned complicated? by ticklemyelmo on Monday May 10, 2021 @11:26AM (#27107050)
Isn't the location that a ray strikes entirely a function of angle of incidence, its frequency, and the particular lens? Why couldn't that function be determined and inverted?
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Re:Why are modern 50mm lenses so damned complicated? by proudfoot on Monday May 10, 2021 @11:56AM (#27107448)
Optimally yes. But in practice multiple rays from multiple angles strike the same sensor.

Lens design is about minimizing this.

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Re:Why are modern 50mm lenses so damned complicated? by Fronzie on Monday May 10, 2021 @12:06PM (#27107570)
The phase matters as well if some parts are captured out of the focal plane.

Even if reconstruction is possible, it might amplify the noise by a substantial amount.

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