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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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) Q2 w0 d( s& ~! c5 OF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。7 B9 D" F, b6 ]$ p5 M- R$ A
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8 }1 j. O8 ?5 JAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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$ Y( ~8 T8 o6 x5 C- s7 |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." q4 h4 o7 `( t8 _& X2 E
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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.
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, h* }7 Z/ u- p9 }( U/ _3) The f/4 is lighter and smaller. Winner f/4.: }1 n; q! v2 Y
) k- ~" j' \ I0 m% v& G, m4) 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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, m& h$ E/ h/ J+ Y$ v$ K( K5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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