| 摘要 |
A soft focus lens which is designed as a retrofocus type lens, comprises a front lens group having a negative power, a rear lens group having positive power, and a diaphragm located within the rear lens group. The front and rear lens groups are arranged in this order from an object side. In particular, the soft focus lens satisfies the following conditions; SAU/f<-0.10 (1) f/fF<-0.5 (2) where SAU is spherical aberration at full open aperture, f is focal length of the whole lens system, and fF is focal length of the front lens group.
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