lens aberration

基本解释

Astigmatism -- a lens aberration that elongates images which change from a horizontal to a vertical position on opposite sides of best focus.
像散-该像差在最佳对焦点两面从水平位置到垂直位置拉长图像。
Coma: A lens aberration which causes subject points to record as coma-shaped images. This effect is mostly found in fast lenses and when large apertures are used.
彗星差：透镜的一种像差。它使图像点带有像彗星尾巴似的影像。这个情况多数在强光镜头，使用大光圈时发生。
Coma: A lens aberration which causes subject points to record as coma-shaped images.
彗星差：透镜的一种像差。它使图像点带有像彗星尾巴似的影像。

Furthermore, we have achieved a wide horizontal viewing angle of 45 degrees by incorporating an optical lens that thoroughly suppresses unwanted elements such as aberration and distortion.
ENGADGET: Sony's head-mounted 3D visor is real, HMZ-T1 arrives in Japan November 11th