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>Camera saw red, you didn't. But, again, you cannot consider flawed human perception to be the ground truth! Photonically, the red eye is the ground truth. If

by dTal 2mo ago

>Camera saw red, you didn't. But, again, you cannot consider flawed human perception to be the ground truth! Photonically, the red eye is the ground truth. If you were looking through the viewfinder, you should also have seen the red eye effect, if only for an instant. If you didn't, it's only because your eyes were too slow. Or perhaps you weren't looking through the viewfinder at all and therefore not in a position to see the retroreflection, in which case you might as well have been facing the other way for all that counts. Or consider taking a photo from a moving vehicle. You can't resolve your blind spots with saccades because the scene moves. Your subjective impression is probably that only the thing you're tracking is crisp, and everything else is a vague, blurry mess. Is that what the camera should capture, irrespective of shutter speed? I think it's clear that culturally we expect photographs to be an indexical trace of genuine photons, not a replication of subjective experience. That is the value they provide over an "artist's impression".

ben_w 2mo ago
> But, again, you cannot consider flawed human perception to be the ground truth! Irrelevant. The entire point I'm making here is that I think the criticism isn't about objective ground truth, but subjective: users want the camera to show what they saw as they saw (/would have seen) it. > the red eye is the ground truth Only if you happened to be looking at the moment of the flash itself, while the subject's retina is most dilated, and somehow the rapid change of intensity didn't mess with your own vision. > I think it's clear that culturally we expect photographs to be an indexical trace of genuine photons, not a replication of subjective experience. That is the value they provide over an "artist's impression". Some, perhaps many, people might. I think I was disabused of such notions even by the time of my GCSE in art*, which involved a film camera because digital cameras were very rare in 1999/2000, and thinking about it also my GCSE in history given that showed us all the editing done by the Soviets. I wouldn't have phrased it as an "indexical trace of genuine photons", but photos have been absolute liars from day one. * where, ironically, one of the things the teachers tried to impress upon students who only slightly listened, was to actually look at the thing they were drawing instead of imagining it

by dTal 2mo ago

ben_w 2mo ago

> But, again, you cannot consider flawed human perception to be the ground truth! Irrelevant. The entire point I'm making here is that I think the criticism isn't about objective ground truth, but subjective: users want the camera to show what they saw as they saw (/would have seen) it. > the red eye is the ground truth Only if you happened to be looking at the moment of the flash itself, while the subject's retina is most dilated, and somehow the rapid change of intensity didn't mess with your own vision. > I think it's clear that culturally we expect photographs to be an indexical trace of genuine photons, not a replication of subjective experience. That is the value they provide over an "artist's impression". Some, perhaps many, people might. I think I was disabused of such notions even by the time of my GCSE in art*, which involved a film camera because digital cameras were very rare in 1999/2000, and thinking about it also my GCSE in history given that showed us all the editing done by the Soviets. I wouldn't have phrased it as an "indexical trace of genuine photons", but photos have been absolute liars from day one. * where, ironically, one of the things the teachers tried to impress upon students who only slightly listened, was to actually look at the thing they were drawing instead of imagining it