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A comment on Update: iPhone Camera app did not replace person's head with a leaf. Parent comment

Re:Update: iPhone Camera app did not replace person's head w... by OJFord on Friday December 31, 2021 @01:48PM (#29751135)
The (a of course, but the one originally involved) responded 'it's a very cool lesson in focal length compression' though; so it seems to me from that & still from looking at the image that the iPhone is doing something - making choices, engineering trade-offs - that makes this accidental edge case worse.
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Re:Update: iPhone Camera app did not replace person's head w... by jolux on Friday December 31, 2021 @01:51PM (#29751179)
No, focal length and its effects on imaging is a fundamental aspect of how lenses work. You could reproduce this with any camera. More here: https://en.wikipedia.org/wiki/Perspective_distortion_(photog...
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Re:Update: iPhone Camera app did not replace person's head w... by jolux on Friday December 31, 2021 @02:05PM (#29751319)
This case actually seems even simpler though. There was a leaf in the foreground obscuring the face from the camera's perspective. Distortion doesn't quite enter into it.
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Re:Update: iPhone Camera app did not replace person's head w... by masklinn on Friday December 31, 2021 @02:10PM (#29751376)
They're not talking about the obscuring itself, but the focal compression effect which makes it look a lot like the leaf is where the head should be, rather than clearly being in front of said head.

Though the aggressive denoising and small lens probably doesn't help.

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Re:Update: iPhone Camera app did not replace person's head w... by jolux on Friday December 31, 2021 @02:30PM (#29751615)
> Though the aggressive denoising and small lens probably doesn't help.

I think it's mostly this. The photograph is incredibly noisy, very difficult to tell what's going on.

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Re:Update: iPhone Camera app did not replace person's head w... by OJFord on Friday December 31, 2021 @02:09PM (#29751371)
Oh I didn't realise that was called 'compression', makes sense though, I was just thinking too software-y! Don't modern iPhones have multiple cameras for depth of field though, it could (or intends to) do something clever to make it clearer couldn't (resp. ) it?
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Re:Update: iPhone Camera app did not replace person's head w... by jolux on Friday December 31, 2021 @02:53PM (#29751885)
The photo is already heavily denoised per the sibling comment — possible they could do more but it's difficult when the sensor and lens are so small.
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