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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:1 m. J% n1 h0 R$ { i% r- h
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F4 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:: m, B+ `7 l/ W; ]1 I4 o0 e
$ F' p9 M: u n& }5 I/ z1) 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.% }$ B1 P: K h3 W: ?& 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.) }8 j# d& d7 _" w' I( ~7 x. J* a
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3) The f/4 is lighter and smaller. Winner f/4.
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& A! ^: \5 P" x+ N4 I4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.7 b1 k' s' C L F9 A
- b3 S6 x7 r% C3 T' p5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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