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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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0 a; Y8 g/ u4 ]: ^9 FF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。3 |3 g! P6 J/ Z) E
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! i3 G1 ]1 U, X) j: SAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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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.: ?) O. a' M" k! @
- o1 e8 w5 _7 o2 n( y2) 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./ Q( J, v0 `+ U3 I+ C
7 h; m4 \ N" A+ B5 K( m; t0 b3) The f/4 is lighter and smaller. Winner f/4.$ @; x0 l: x0 V6 U6 V
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4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.8 i! h, ]" u; m; @ a
. W1 v) Q. x: V+ }- n2 \5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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