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发表于 2010-10-5 20:41
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正好刚看到一个类似的问题在别的英文论坛:
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4 s5 Y# Q! h1 C5 MF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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2 n$ y- Q$ B- C* q5 I" \% pAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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1) The f/2.8 gives you one extra stop of hand-holding possibility, but at the cost of depth of field, whereas the 4.0 gives you 3 stops of hand-holding possibility at any aperture. Winner: f/4.1 H: Q7 L! ]/ _: [ Q
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2) The f/2.8 gives you one extra stop of light in darkened conditions when photographing moving subjects. The f/4 doesn't. Winner: f/2.8.
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! M- c, P, o" t* v- X- F3 y2 _- Q3) The f/4 is lighter and smaller. Winner f/4.; J7 R e0 b/ ?8 a! ?& K p
B3 L7 w; n8 x$ N; A0 d7 U4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.
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o( D2 F, }1 x% {2 u" c4 x& N: |5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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