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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:5 a1 t! }' w E# L# c' |
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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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2 }. c( S+ J$ K9 h0 DAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points: ^( [& o! x. b, U7 o
5 F% T# S' V& j1) 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.; m4 {" `7 G+ s# }$ {" V
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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.
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3 q" a) P) A) Z- W1 r3 j3) The f/4 is lighter and smaller. Winner f/4.- w: x$ G \/ l6 M U
' E8 f1 J$ k2 N4 v. C% ^# S4) 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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" S, j) n; I5 m; y0 @/ ~( {7 N, y5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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