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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:0 g0 g0 Y# R& R/ w
0 o* R5 j) r6 Z: ^6 xF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:% k3 {6 c3 G9 ]7 C; e& K
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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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1 R1 ]* W9 n" g. h: e; I4 e2) 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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8 d& C7 q" m# L( }3 O4 e3) The f/4 is lighter and smaller. Winner f/4.
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4 L4 F# p/ B8 e N4) 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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9 U/ `8 }9 G! \: b, n5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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