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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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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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, i7 K- `0 P. i/ N! ~Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:4 g% _1 q+ v; h; H( J2 w
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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.
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+ Q1 y$ r8 f7 J9 ?% p9 w2) 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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4 b0 r$ a6 r, b/ x0 c2 L3) The f/4 is lighter and smaller. Winner f/4.% q) R. f( L0 d( ~: n. v( _% E
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4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.6 U+ v% e8 H; B: y
' d" m2 _! e1 x, }3 C* [& `5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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