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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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$ R$ }, L- n4 y" j6 A, q4 nF4 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:
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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.- `# `7 Z. a, L6 d
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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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, r, n% z, D4 L4 o3) The f/4 is lighter and smaller. Winner f/4.' [( E5 @' R N% z# I, x
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4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.7 j/ s# L% d3 @( V0 y8 F3 l3 V& [
8 x n0 ^1 X0 O# K9 ?* r5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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