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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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- V p+ K$ r; y/ E4 Q3 K# N$ i0 @F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。- d' D( _* I+ i9 \' k7 k3 | f
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: ~6 D# _+ d) H/ L WAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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. T2 m5 W) B7 v# \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.
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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." W8 t* V# C& J8 i8 L5 e# ?
. z2 F& G' r+ `# M5 ^3) The f/4 is lighter and smaller. Winner f/4.
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K' W' o; C. {2 F7 o: j4 a4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.. t. P" G4 b. V* S% z6 r
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5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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