| 1. | A focal length only half the diagonal of the film frame , produced with an almost symmetric lens design of surprising compactness , featuring the typical advantages of symmetrical lens designs : distortion is extremely well controlled , and so is color correction and image field flatness
只有胶片对角线长度一半的焦距、惊人的紧凑和几乎对称的镜头设计，使之具有对称结构镜头的典型优点：控制得极好的变形、色彩矫正和像场平坦度。 |
