Sony Xperia Pro-I 一吋Sensor - 手機討論

By Tristan Cohan
at 2021-10-27T11:21
at 2021-10-27T11:21
Table of Contents
先講結論 , 我覺得行銷方面的確有避短揚長(或者你要說欺騙)
但我覺得這條路是正確的方向
首先原文內提到
"實際上 Xperia Pro-I 拍照時的有效感光元件面積約等同 Pixel 6 搭載的 1/1.3 吋元件。"
我不是很喜歡用"面積"這個單位來當作評價標準
因為面積取決於兩個變數 , 而這兩個變數分別對應到不同的performance
A. resolution
B. sensor pixel size
(例如: 原RX100 sensor spec
Resolution = 5472 x 3648
Pixel size = 2.41 um)
Sony目前對策是使用與RX100同樣的sensor
但鏡頭無法維持與RX100一樣的Image circle, 新鏡頭只用到原本20MP的其中一部份12MP(60%)
但是Pixel size 加大到2.41um !!!!!!!
但是Pixel size 加大到2.41um !!!!!!!
但是Pixel size 加大到2.41um !!!!!!!
(覺得重要講三遍)
Pixel Size變大有甚麼好處?
1. 夜景 (單位pixel進光量增加)
2. 雜訊 (畫面純淨度)
3. 散景 (最小模糊圓變大)
resolution變小有甚麼壞處?
1. 輸出大圖會"比較"糊 (跟20MP對比)
2. 圖片放大會"比較"糊 (跟20MP對比)
(12MP絕對是夠用,多少人會有以上需求?)
(Sony曾經出過"全幅"相機A7s,就是只有12MP,但pixel size是更大的8.4um)
對比Pixel 6 , 使用同樣感光元件面積差異在哪?
Pixel 6 = 50MP / 1.2um
Pro-I = 12MP / 2.41um
可以看出兩邊對於影像的專注不同
Sony就是用Sensor的大底來提升影像品質
Google就是用更多的畫面資訊量來當演算法的底
我覺得沒有誰對誰錯, 都是往自己擅長的領域發展
(sony 不主打sensor難道跟Google拚演算法?
反觀google難道自己開發一款sesnor跟sony對打?)
--
Tags:
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