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A comment on A Camera Lens Made from an Iceberg. Parent comment

Re:A Camera Lens Made from an Iceberg by m31415 on Thursday February 28, 2019 @01:39PM (#19273822)
Chromatic aberrations cannot be removed using a material of just one refractive index. And as the video shows this lens has chromatic aberrations.
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Re:A Camera Lens Made from an Iceberg by cromwellian on Thursday February 28, 2019 @02:33PM (#19274316)
Some of the blurriness seems related to melting on the surface layer. I wonder if he had made a metallic lens housing which was supercooled to prevent melting if the result would have been better.
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