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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:: T D" |, M$ f/ Z2 J) [: D* r# o0 ^
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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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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:9 H: K8 Y% G+ M2 W
0 f5 N; u7 h. B) a1) 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/4.0 j- H+ E; r; b# \3 F1 W" r+ Z
5 |& S; i% K% `' r6 U3 m5 s) r2) 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., `- X- C! Z8 m
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3) The f/4 is lighter and smaller. Winner f/4.4 o2 i+ M) r5 V
2 V: T9 s& m3 E' w5 @1 e4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.6 q; u: R5 O7 S2 o
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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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