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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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% p: A! h7 I+ \3 w- TF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:, `: F0 |$ L5 c
2 W1 w E. n$ m$ C6 {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.: n! D; o. x) _- Z1 r; V2 G6 C
6 l1 X- n( D! y; d O0 G& 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/2.8.9 Z: X, t; M0 g1 a k# l
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3) The f/4 is lighter and smaller. Winner f/4.4 n: p2 h" D. X* P1 x3 V6 E
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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 [! c5 G- _/ a2 R* Y. s" [0 w- v5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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