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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:7 I4 e# d/ x4 m: H4 e' p- X3 b2 o5 D
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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。7 h3 c6 A$ M. A5 W* u7 |& Q
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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:: w) f, R) u1 u8 W1 {; ^9 r
( T1 i7 k9 d0 b1) 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.# |; ^6 l! m: d) N2 y
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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.: v' ~. g9 }. h- ^9 c
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3) The f/4 is lighter and smaller. Winner f/4.# i: ?. O7 y+ H
& ^- Z$ I% B5 K3 X8 [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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5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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