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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:$ g- z* V0 {6 a7 k D
8 z6 h, ]! ^$ V; a0 Q' xF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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1 m. u1 B1 W6 D6 G+ GAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:% Y, ]& B+ Q4 _# G
" T8 N% s n% t0 L1) 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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" E4 d+ r) A. K, ^0 Q* K8 b) B& ^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/4.6 A, B. D, O/ I$ n+ D
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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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4 \4 r$ @, B) }) x! |" b! k& `; q5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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