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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:* ~0 w1 i- N M* _4 \0 N1 _
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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。4 _3 a, t. ]9 i6 F5 a8 G
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$ O. n0 V* |* m) \Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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8 _, r7 P0 q; k! F% Q1) 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.) F9 p& e2 y7 e1 a4 j
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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/2.8.1 C, v5 q! O$ g& q% R2 [, \$ a( S, l
% Q+ g; ~3 z) U) a' f1 @: k3) The f/4 is lighter and smaller. Winner f/4.
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( u4 b7 e7 r- o6 ]# [( A4) 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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5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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