根據這個網頁
http://cck0217.myweb.hinet.net/TNGNEW-2.html
焦距應該是透鏡到感光元件(焦平面)的距離吧
也就是說,如果我的鏡頭實體焦距是16mm
那透鏡和感光元件的距離就是1.6公分對嗎?
可是單眼機身的厚度就差不多3到4公分了,怎麼可能透鏡到感光元件只有1.6公分呢
是我的理解有誤嗎?
請高手解惑一下,感謝
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