jìng tóu / biān yuán / chū xiàn / míng xiǎn de / jī biàn / zhí xiàn / kàn qǐ lái / xiàng / hú xiàn

镜头边缘出现明显的畸变，直线看起来像弧线。

There is noticeable distortion at the edge of the lens, making straight lines look like arcs.