華為P20 木西【解密華為夜景照片】 - 手機討論
By Emily
at 2018-03-29T13:02
at 2018-03-29T13:02
Table of Contents
本來微信上有發一篇,但是微信上照片刪除了?
木西:因為我暴露了幾張要在中國區發佈會裡用的照片
圖片分別是 1.專業模式長曝光拍攝 2.手持4s夜景模式 3.上腳架的夜景模式。
https://wx1.sinaimg.cn/large/6f7604ecgy1fps0vn4yk8j20qo0zk46p.jpg



#華為P20#【解密華為夜景照片】
https://m.weibo.cn/status/4222399731686432
這次木西團隊主要負責在意大利和香港拍攝發佈會夜景樣張。不同樣張各自使用了
【專業模式】和【夜景模式】拍攝。
【專業模式】P20 Pro採用大底4000萬像素彩色CMOS加上2000萬像素黑白CMOS來獲取圖
像,然後超采成千萬像素的小圖,這個信噪比的提升是單攝成像手機很難匹敵的。因此
專業模式的照片,光看曝光參數里的ISO和曝光時間是不準確的,別忘了隔壁的黑白攝
像頭可是f1.6的光圈。專業模式按下一次快門即實現一次曝光(雙鏡頭同時),適合極
限暗光條件,用來獲取最大的光線信息。但不適合複雜光源,明暗差異太大的環境,如
城市夜景等。
【夜景模式】華為的超級夜景(現改名為「夜景」),根本不是單張照片曝光所得,
而是連續地拍攝很多張不同曝光參數的照片做實時堆棧和HDR所得,大家看到的最終參
數,其實是超級夜景拍攝期間所有照片曝光時間的總和。而這樣堆棧得到的畫質和動
態範圍,比單張曝光同樣時間得到的照片要好非常多,適合複雜光線條件,如城市夜
景,室內燈光等。但不適合拍攝極限暗光,比如星空。
而夜景模式又分為手持和長時拍攝兩種情況,由手機根據環境光線明暗自動判斷,絕
大部分城市燈光會觸發手持模式,而鄉村,深夜等情況則會觸發長時間模式,此時需
要三腳架,如同老的超級夜景。
----------------------------------------------------------------------------
那請問hdr或者超級夜景能輸出raw格式照片嗎?
木西:不能
手持3秒不糊,真的假的啊?這啥黑科技?
木西:三秒手持不糊,並不是單次曝光三秒鐘,而是三秒內連續拍攝很多張照片併
合成。保證這三秒內拍攝的每張照片不糊,那麼所有這些照片合成起來也就
不會糊,明白了嗎。
所以白天能輸出4千萬分辨率嗎?
木西:當然可以
拍星空,OMG
我很好奇,第一張拍的出來嗎...
木西:我拍的,就一定拍的出來
--
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