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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 {; W3 a- ?' v8 m9 e' F% P
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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。$ X& ]) c( h( X; c* D
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+ {$ ^, W* @* I4 A' {Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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: }% d, T9 Z. b0 E( y1) 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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+ I6 ~4 f, R* g' ]& H, Q2) 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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! j' b( j0 v" ^: w7 U3) The f/4 is lighter and smaller. Winner f/4.; O1 J5 h5 C6 A
1 Q7 I8 x* |) u- H4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.+ L. e ]* h& ?: [, [: ^
: T1 Q" I1 E, `+ w' F2 i5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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