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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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1 U" h. v1 y6 t! _# F4 gF4 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:" f4 c' b9 i5 H) E: ?' ~! ^
& O% S3 m: x& h; Z: [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.+ V, r3 D3 }6 ~0 D
5 ] M: X" ~+ X3 ?8 T0 {* L6 f2) 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./ \: J+ e, y+ r5 L
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3) The f/4 is lighter and smaller. Winner f/4.
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) {; r$ @. t* J4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.6 H0 x1 |& E8 x6 C6 E2 y: a% e. k9 l
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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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