[Neva]

http://www.photozone.de/canon-eos/158-canon-ef-50mm-f12-usm-l-test-report--review

vs


http://www.photozone.de/canon-eos/392-sigma_50_14_canon

[Neva]

sigma 的評分為：

Optical quality: 4 星
Mechanical quality: 4 星
Price/Performance: 3-4 星



Canon 的評分為：
Optical quality: 4 星
Mechanical quality: 5 星
Price/Performance: 4 星

[Thomas1]

50L Chromatic Aberrations (CAs) 輸俾 SIGMA 50 1.4 好多好多.

[Thomas1]

以下祖國的測試也是公正的.更仔細. 月亮是一樣圓的.


http://review.fengniao.com/98/982150.html


50L 最大好處是有鏡身金屬,做工結實. 有1.2光圈.

sigma 行內最大口徑, 邊緣位置更好.
sigma 免費可以再cal 鏡, 而新50d/7d/5d2/1仔機, 有焦點微調. 最終是準焦的.......哈

這是最好的sigma lens.

當然用多7千有紅圈.....型 ( 其實sigma 77mm大口徑,也好型)

[louis277]

<<<50L Chromatic Aberrations (CAs) 輸俾 SIGMA 50 1.4 好多好多>>>

If CA is a decisive factor to this lens, then the price/performance index of 50 f/1.2L should not be so high. Remeber that this is "a specialty lens for those requiring the maximum in depth-of-field capabilities". For me, this is a protrait lens and I really seldom to shoot under harsh contrast condition.

Of course, if CA is your decisive factor, then why not choose C50 f/1.4 ? C50 f/1.4 CA is around 0.26 - 0.37 (much lower than SiGMA 50 f/1.4)
and I can quote "SIGMA 50 1.4 Chromatic Aberrations (CAs) 輸俾 C 50 f/1.4 好多好多"
Even you know the performance of Sigma 50 f/1.4 is better than C50 f/1.4. So, such quote does have any meaning to you or to other peoples ?

[Thomas1]

看lens 就是 ,解折度, 色散, 暗角.變形....

人像拍攝,可以是外影(太陽,樹林), 有金屬服飾...可以有色散問題的

原廠50.4散景相比見拙. 50L 和 S50 明顯優勝.

測試數據是公平的中外測試是一致的,不好的地方指出,是好的交流.

萬元定焦,要求高是合理的. sigma三千多元副廠,是出色的.
所以有師兄放走50L, KEEP S50.

[louis277]

你咁講就合理得多,唔好求其拋一句"比乜乜,A鏡輸俾B鏡好多好多",呢啲叫做"好的交流"?

至於萬元定焦係咪叫做貴或者合理就好睇個人要求啲乜?正如1D Mark IV同7D比,快2張ISO高二三級多十幾個高精十字值唔值俾多兩皮幾呀?個答案就係你用得著又幫到你達成心願嘅咪值囉!

[Thomas1]

***50L Chromatic Aberrations (CAs) 輸俾 SIGMA 50 1.4 好多好多.***
可能是難聽d,但可惜是事實.

看以下照片就知

http://review.fengniao.com/98/982342.html


sigma 這次劍無虛發, SIGMA 50 1.4 競爭力好強.看準canon 和nikon點來打.
有些地方優於50L .當然canon 是可以出二代改善的.

我覺得 35 L 是canon 中的利劍, 推介用萬元買,值回票價.

[louis277]

35 f/1.4L我曾經有一枝,不過入左50 f/1.2L後就响呢度放左俾人。因為50mm焦距更啱我!
至於紫邊我唔係太覺,可能我影人像大頭為主!
不如放張1D3 + 50 f/1.2L 睇睇!

[Thomas1]

己有/ 想買 50L canon fans也不用太介意.
因為色散 在 1.2光圈 是多d. 相信 收至1.8/2.0 光圈 開始可以改善
canon 設計時是想清楚實際工作光圈表現要優異的.因為這是萬元L 定焦.

sigma 50 1.4 確是值回票價.表現出色. 奶油焦外散景可比美50L

[louis277]

重有50 f/1.2L入光直徑大於Sigma 50 f/1.4, C50 f/1.2係41.6mm 而Sigma 50 f/1.4 係35.7mm,淨係鏡組都大過Sigma 50 f/1.4!兩者根本係唔同級數,以S50 f/1.4定價只係針對Canon 50 f/1.4 高階用戶!
要最大光圈最淺景深嘅用戶咪照升上50 f/1.2L,呢個亦都係50 f/1.2L個價企硬原因!以前仲有一枝神鏡50 f/1.0L(要兩萬幾三萬),不過已停產了。

[Obi-Wan]

SUPPORT Thomas1!!!!

[louis277]

Obi-Wan,

Still looking forward to your good shoot from S50 f/1.4 ! Mind to share ?

[Obi-Wan]

louis277
your post showed the double-line out foc problematic bokeh of your gear!

wanna see the best BOKEH?
http://www.the135stf.net/samples.html#galleries/new/MJF_20080124_0065.jpg

I will not post my sigma 50 1.4 photos because once posted, may brother will attack my photo. I don't want to waste time on those who don't know about bokeh

to some beginners: "bokeh = out-focus"
"a lens with limited DOF = good bokeh"

[louis277]

Obi-Wan, this minor factor doesn't affect the overall impression from the photo in my opinion. Do you mind ?