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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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1 H# Z s% H5 W9 eF4 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:/ n `: b( V* Z
1 V3 h2 W% _5 P; g: s1) 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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- g' L4 C3 e8 _1 L5 i6 X2) 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.' l, G! O! b. G$ _2 Z: R) W
4 g0 ~6 V! e. W( g: A: k9 f, B3) The f/4 is lighter and smaller. Winner f/4.
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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.* S( M% L% \; x9 @ p. V5 z
# {5 D0 I, }* P) @# ~; E5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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