This isn't a dealbreaker for most background scenery, but it makes faces look plain weird. Super wide angle lenses, like the ones that are starting to appear for things like "wide selfie" modes on smartphones, suck in an impressively wide view from such a small lens, but the tradeoff is that things get stretched out toward the edges. At SIGGRAPH 2019, the team has presented an algorithm that does just that. A Google research team has been working on eliminating the face-stretching distortion you get from wide angle lenses, without the ugly bending of perspective lines you get by applying regular distortion filters. No, it's not just a simple distortion correction filter.
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