iPhone 11 系列超廣角畫質不佳原因 - iOS
By Mia
at 2019-09-21T16:23
at 2019-09-21T16:23
Table of Contents
文長,沒興趣可直接拉到最下面看結論
我們先來看看規格:
https://zh.ifixit.com/Device/iPhone_11_Pro
超廣角鏡頭:
12MP
光圈f/2.4
五片鏡片組
嗯,重點不是蘋果告訴我們什麼
而是沒有告訴我們什麼,魔鬼藏在細節裡
1.沒有OIS,更容易手震
2.沒有自動對焦,所以是泛焦,沒有特定的焦點
要馬就一樣清楚,要馬就一樣糊
有些人提出邊緣模糊的問題,那是所有超廣角鏡頭的光學特性
3.光圈f/2.4 < 主鏡f/1.8,進光量更低
4.三鏡同為12MP,但鏡頭的硬體規格和CMOS?
基本上這是所有手機廠最會低調的事,反正消費者只看得懂畫素嘻嘻
而Android在廣角這部分玩得比較久,會配有大光圈、OIS甚至自動對焦
https://archyworldys.com/iphone-11-and-iphone-11-pro-eleven-details/
如果網站說的沒錯的話,11系列廣角鏡的單位像素面積<1um
非常悽慘…(主鏡是1.4um)
5.演算法的部分。光圈已經不大了…底又那麼小一個
那只剩下兩條路:
調整ISO來控制雜訊 → 太低一片漆黑,太高又會有很多噪點
延長曝光時間 → 沒OIS讓照片晃的不要不要的
因為蘋果沒有手動模式
如果手機演算法沒有辦法將ISO和曝光做出一個好的平衡,那就會糊
追根究柢就是硬體太差的關係,跟主鏡比起來落差太大
也不用太期待Deep Fusion,它就是AI進行多幀合成
也許可以改善動態範圍,但手持細節基本上還是沒救…
結論:等蘋果更新演算法吧,但不要有太高的期望
最後附上一張GoPro 5 black直出的照片
GoPro的超廣角雖然也是小光圈泛焦,但用上1.55um的大底,細節和寬容度就不錯
所以硬體規格也是很重要的啊~
重點是有手動模式和RAW檔,可以讓懂得玩家自行調整參數
https://i.imgur.com/C6JNQzS.jpg
大概是這樣,歡迎留言討論指正,謝謝大家
--
[問卦] 睡醒身上常有不知名的瘀青
--
我們先來看看規格:
https://zh.ifixit.com/Device/iPhone_11_Pro
超廣角鏡頭:
12MP
光圈f/2.4
五片鏡片組
嗯,重點不是蘋果告訴我們什麼
而是沒有告訴我們什麼,魔鬼藏在細節裡
1.沒有OIS,更容易手震
2.沒有自動對焦,所以是泛焦,沒有特定的焦點
要馬就一樣清楚,要馬就一樣糊
有些人提出邊緣模糊的問題,那是所有超廣角鏡頭的光學特性
3.光圈f/2.4 < 主鏡f/1.8,進光量更低
4.三鏡同為12MP,但鏡頭的硬體規格和CMOS?
基本上這是所有手機廠最會低調的事,反正消費者只看得懂畫素嘻嘻
而Android在廣角這部分玩得比較久,會配有大光圈、OIS甚至自動對焦
https://archyworldys.com/iphone-11-and-iphone-11-pro-eleven-details/
如果網站說的沒錯的話,11系列廣角鏡的單位像素面積<1um
非常悽慘…(主鏡是1.4um)
5.演算法的部分。光圈已經不大了…底又那麼小一個
那只剩下兩條路:
調整ISO來控制雜訊 → 太低一片漆黑,太高又會有很多噪點
延長曝光時間 → 沒OIS讓照片晃的不要不要的
因為蘋果沒有手動模式
如果手機演算法沒有辦法將ISO和曝光做出一個好的平衡,那就會糊
追根究柢就是硬體太差的關係,跟主鏡比起來落差太大
也不用太期待Deep Fusion,它就是AI進行多幀合成
也許可以改善動態範圍,但手持細節基本上還是沒救…
結論:等蘋果更新演算法吧,但不要有太高的期望
最後附上一張GoPro 5 black直出的照片
GoPro的超廣角雖然也是小光圈泛焦,但用上1.55um的大底,細節和寬容度就不錯
所以硬體規格也是很重要的啊~
重點是有手動模式和RAW檔,可以讓懂得玩家自行調整參數
https://i.imgur.com/C6JNQzS.jpg
大概是這樣,歡迎留言討論指正,謝謝大家
--
[問卦] 睡醒身上常有不知名的瘀青
→ ewjfd: 我家的香蕉放久也會這樣 你會不會是香蕉?12/12 02:20
你才是香蕉 你全家都香蕉 --
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