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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:! q. L" L- t1 a. S" j" v8 c
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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。* c% `3 Y1 {+ {1 D, b3 ?
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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:+ t/ C1 g6 {% u/ a# W; x
0 u8 Q. k* w8 {/ t% ]" O1) 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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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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% K! X# E' z6 ]0 f" Q, m3) The f/4 is lighter and smaller. Winner f/4.# u' X9 ^9 G/ M5 H# e" ]0 q7 C
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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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6 C( p" g; Z% ~% m$ N& T! k5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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