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請教一些A7S的問題
Jul 20th 2014, 14:53

gelinma wrote:
全幅就是，焦段清清楚楚，鏡頭標多少就是多少，優勢：廣角與標準焦段，劣勢：望遠焦段不會加乘。


你的說法容易誤導人
焦段是鏡頭中心點到感光元件的距離
並沒有甚麼加乘的事
會加乘是因為在底片時代
用慣了135片幅的相機
才會有那些焦段出來
而數位化後
為了方便了解才會換算成135片幅的視角
簡單來說就是習慣成自然
就跟我們有人用公分有人用公寸來測量一樣
並沒有哪邊是不正確的

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