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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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" K8 a0 P3 t; E; iF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。! j/ x& ^4 H8 A' g! V" |$ t# j; W
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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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; I. z) {- n/ I1) 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.
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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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3) The f/4 is lighter and smaller. Winner f/4.
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4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.+ @( h L. I8 C
) h- ?) o9 `+ X8 \5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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