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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。1 a; U- t6 g M5 e/ `2 w8 `8 I
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4 i- B) }! L% U, |& j' m( Y1 RAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:4 r! r0 B: L$ v# g4 \
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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/2.8.7 h& [7 m) ?8 K5 Q
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3) The f/4 is lighter and smaller. Winner f/4./ | ^, `1 P& o) d7 o
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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.
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3 g) D3 T. a* A' x0 [9 L5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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