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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 @ n M1 B( r' g5 x- e
7 b; q8 M8 P/ s- K% f' s; uF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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( D2 |2 T+ V/ |6 l, H% _Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:7 q. k6 \1 e/ W' D9 S6 J
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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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+ v, @% u2 S8 {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.
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3) The f/4 is lighter and smaller. Winner f/4.# @' O) \' a* @
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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.; B% N: E6 R4 f: R
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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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