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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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% C/ p b$ K' z# \! HF4 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:5 z9 y+ b( Z( h4 \' z
% ~+ V/ K% R5 T- x+ F% f0 H1) 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." J* h$ L9 J- o e
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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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1 t3 M- s" L1 X) J# I0 N3) The f/4 is lighter and smaller. Winner f/4.6 L4 g6 b, g9 ^2 ^' Z) Z
- ?4 U7 t9 [. A l& {4 a4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.; w! v6 ^1 j8 p1 f4 s0 G0 v1 n5 Y8 z
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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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