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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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& S- Y6 Q$ h6 s L7 {; c+ m- F* m5 }F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。2 y) e y5 \5 r) V0 D
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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:4 m3 r3 W. m ?- `7 E2 h
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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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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.; y' y% g* i& v6 B! z2 c* z
0 s6 X. s' y# i) z5 z5 D2 }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/2.8.3 q. z9 U9 w+ t/ N0 f; T1 g* W) ~
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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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