nikonrumors 看到的自動對焦測試文

http://nikonrumors.com/2011/03/28/auto-focus-accuracy-a-scientific-cross-brand-analysis-guest-post.aspx

Nikon的表現很優,想不到第二名是S家不是C家,這有點超出個人的觀念~~

擷錄原文
Nikon gets the best results with 70% of tests with a low auto-focus error (between 0 and 5% of error) and only 10% of tests with high auto-focus error (more than 10% of error) , followed by Sony and Canon, Pentax and Olympus with worst results (45% of good results – 0-5% error – and 25% of high levels of error – > 10% -) .



2011-03-30 8:32 發佈
monster8564 wrote:
http://nikonrumors.com/2011/03/28/auto-focus-accuracy-a-scientific-cross-brand-analysis-guest-post.aspx

Nikon的表現很優,想不到第二名是S家不是C家,這有點超出個人的觀念~~

擷錄原文
Nikon gets the best results with 70% of tests with a low auto-focus error (between 0 and 5% of error) and only 10% of tests with high auto-focus error (more than 10% of error) , followed by Sony and Canon, Pentax and Olympus with worst results (45% of good results – 0-5% error – and 25% of high levels of error – > 10% -) .


這是您引的「結論」的完整文章:

Based on this figure the conclusion is : Nikon gets the best results with 70% of tests with a low auto-focus error (between 0 and 5% of error) and only 10% of tests with high auto-focus error (more than 10% of error) , followed by Sony and Canon, Pentax and Olympus with worst results (45% of good results – 0-5% error – and 25% of high levels of error – > 10% -) . However this figure is terribly misleading, because other variables can influence these tests: the model of the body, the lens manufacturers, lenses model, and aperture…

換句話說,您引的那一段並不是完整的段落。

事實上,建議您把全部的文章看完,該文的統計分析結果很有意思。
Lionel Humbert 的論點有沒有說服力是其次,至少 Lionel 提出了一個挺有意思的分析方法。



You don't take a photograph, you make it. - Ansel Adams
比較有趣的是圖四
為什麼7D的分數這麼低呢?

然後別再吵N&C
The difference between Canon and Nikon with >=f/2 lenses is not significant.

一般常用光圈下,相差無幾
(但移焦問題

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