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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:' _. Z1 a; W6 Z7 w; m
2 D4 k$ T7 w' @1 D6 L- Y; C3 JF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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" n5 S7 [7 ]. N! @Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points: b5 s% q+ s4 y# Y, @- n7 D
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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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q4 }5 M! g; A9 M( |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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5 F; G; ^; b |! s( y' I/ Y+ r! P3) The f/4 is lighter and smaller. Winner f/4.0 g, r; ]/ E4 z3 T9 z
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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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8 {8 ]" j# U, ` ^' C4 f5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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