有時候提到某個鏡頭strained，是什么意思��？在一篇論文中看到 n| =k9z<y8  
When one or more elements contribute large aberrations to the sum, and compensating for those aberrations is difficult {#YGor|  
or imperfect, one says that the lens is strained. F3[3~r  
意思有點大概明白，strained這個詞有沒有對應的中文啊 %m