[閒聊] 觀景窗視野率非100%的意義
觀景窗視野率非100%的意義...
根據我粗淺的認知,似乎有幾個說法。
一個說法是在古早的底片時代,寧可多拍到一些雜物,
也不要在相片洗出來的時候,才發現缺東缺西。
畢竟相片在放像時可以控制範圍,或是直接裁切相片。
另一個說法是,拍正片製成幻燈片時,
幻燈片外框(正片夾)會遮住一部分畫面,
所以才將視野率設定成小於100%。
還有一個說法是光學觀景窗在製造時有各種誤差,
為了保險起見,才將視野率做成接近100%又不超過,
避免因製造誤差讓視野率超過100%,變成看得到卻沒拍到。
傳統單反大廠堅持視野率非100%,
應該是考量製造成本的問題吧。
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我的見識較淺,請問反光鏡的先天優勢是?
※ 編輯: pshuang (106.104.77.154), 06/27/2017 13:01:14
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