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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:/ W9 K# m! A4 n" j
) _0 @, c- n5 s! r- ZF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。. z9 v2 ~6 g& p
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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.
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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/2.8.7 M/ e n; {# o3 _; D4 L, z
1 h* A- ?- w- b2 q2 t* _! Q3) 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.
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3 N& a/ `- U- h8 s$ D% |5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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