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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 w: V; ?8 R' G) o9 e2 ^2 w F
7 K( x7 c- P9 h( S: c! ^/ ~# f- QF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。- v; N6 {! s7 m8 Z* E
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) W7 y p: q" ~" V8 }0 l+ j2 HAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:8 w' h, {5 D( M; Y/ D* t+ w. L
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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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h5 u4 B+ r' R0 A/ G2) 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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5 @! e. t% I1 r! Q: `3) The f/4 is lighter and smaller. Winner f/4.
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0 b {. n* t! E! ~3 Y4) 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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