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by formerly_proven
693 days ago
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There's a number of lenses which prioritize distortion correction because they don't get to have lens profiles. Though even low distortion wide angle lenses generally retain low levels of high order distortion (i.e. straight lines become slightly wavy across the image, instead of having a large amount of low-order distortion, i.e. being simply bent strongly one way or another), see e.g. Laowa Zero-D lenses. I do actually think the OEM design approach is better overall. It's a lot easier to near-perfectly correct high amounts of low order distortion than it is to make lines with a slight amount of 6th? 8th? order distortion actually straight. Even if the resulting raw image of the OEM lens looks more like a fisheye than a rectilinear lens. |
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