[討論] 關於S6相機日拍是否能追上M43的討論消失
今天看到有板友在"S6 Edge使用三天真實心得:耗電很快!"一文中,
分享S6 Edge日拍的效果直逼Olympus的Micro 4/3相機,
我覺得有些部分可以討論一下,也希望能拋磚引玉。
首先,S6/S6 Edge的Sony IMX240 Sensor是1/2.6",大約等於5.6的crop factor。
也就是他的實際焦距應該是等效的28mm/5.6=5mm。
但光圈大小應該是以5mm下去計算的,所以f/1.9的光圈,
可以換算成f/(1.9*5.6)=f/10.64
(換算的方法可以參考此影片:https://youtu.be/f5zN6NVx-hY
)
而Micro 4/3的相機Sensor大小顧名思義是4/3",大約等於2的crop factor。
若今天用的光圈大小是Olympus E-M5 kit lense最大值得f/3.5,
可以換算成f/(3.5*2)=f/7。
而f/7大約等於f/10.64 * sqrt(2)^1.25,
也就是說在一樣的快門速度,
Olympus E-M5 + kit lense最大進光亮是Galaxy S6的1.25^2 = 1.56倍。
換句話說,在大白天由於ISO本來就開得很低的情況下,
Olympus E-M5的ISO開100,S6連開到200都不用,就有一樣的進光量。
那請問這樣S6效能是否直逼E-M5?
當然,小弟魯蛇只是業餘玩相機與手機。如果有說錯再請各位大大指正。
至於像是SamsungDog這樣的噓文,我想我也可以像猜Micro 4/3感光元件是4/3"一樣,
顧名思義去評估他對Samsung Galaxy S6發言的價值了。
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※ 文章網址: https://www.ptt.cc/bbs/MobileComm/M.1428948028.A.062.html
※ 編輯: ferrinatice (112.104.174.105), 04/14/2015 02:03:40
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SORRY
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APSC輸給全幅應該不會是近光量的問題,crop factor才1.5
會輸主要是在對焦系統、防手震等性能。
當然如果M43掛上大光圈S6就沒戲唱了,只是如果還要換鏡,
那方便性就更低了,會拿手機比相機,就是考量方便性!
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推 y8202231 : 噓韓貨
致命傷 XD 04/14 08:09
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還有 97 則推文
還有 29 段內文
噓
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他並沒有浪費時間,事實上我覺得他的糾正是對的
是我對於進光亮跟曝光值的概念不對
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※ 編輯: ferrinatice (140.113.150.120), 04/14/2015 14:40:55
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噓
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我又沒說S6等效全幅5mm的焦距... 我是說他5mm等效全幅28mm
我在討論說光圈大小是否應該算成f/1.9*5.6=f/10.64
但我把近光量與曝光值的概念弄混了,farain說的才是對的
※ 編輯: ferrinatice (140.113.150.120), 04/14/2015 14:47:53
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購買者當然希望畫質更好,其實在看到Ricoh GR1、Panasonic CM1之後
我也很好奇未來大尺寸感應元件是否會在小DC、手機上更普及
噓
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*********
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我承認我討論的議題是有爭議性的,我也沒說我一定對
但我覺得你跨過理性討論的線了
※ 編輯: ferrinatice (140.113.150.120), 04/16/2015 21:25:46
※ 編輯: ferrinatice (140.113.150.120), 04/16/2015 21:26:46