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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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- o8 s- O9 m8 q; \3 a7 L( IF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。( j5 G0 g+ M7 O1 R
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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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; Z( z8 C) J8 v9 v% I4 O. N* D! ^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/4.1 _- q4 K9 u' }# U2 f
* V. C; b+ v- b' q: e* S* D2) 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.; s7 @0 W& c7 g2 Y N' }
+ j% x+ u* D, M- w' I& S3) The f/4 is lighter and smaller. Winner f/4.- T/ I2 l0 t+ A! G! t5 {
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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.
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2 h5 e3 V9 h. Y* ^( a) h3 w7 i5 i5 D5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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