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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: K: [2 m+ s7 `. p
) R/ k! Z6 a q) ]9 f h% I6 I/ iF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。* M! B3 @; b/ r E x
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a( \4 \8 Z9 T* L! c' TAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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, Q3 F4 g6 e+ [3 U9 }& y9 f" G1) 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." |, Y x, w! B1 S
6 ]1 k$ [! y. ?: J/ V" A2) 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.( ]+ P6 N0 p) f5 u4 \$ U% T
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3) The f/4 is lighter and smaller. Winner f/4., @3 P' l; n+ v |) n: v: R6 d/ H: B
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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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5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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