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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:$ i0 v) q3 z5 A. R: p" h+ i
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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。0 c$ j. T, t( I# w
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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:; B. H% M( q, b4 ]' ~4 c! y
& v& o+ ?8 X! e. f& ~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.( D9 ~* |* i0 q/ H0 y2 X
9 _' ~# G8 D1 P o. ^! _4 R2) 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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+ x f0 }9 ?0 p' A6 M S: B5 |' L7 U3) The f/4 is lighter and smaller. Winner f/4.% r* y# ~8 T3 B+ Y3 q, i
. b7 w+ z1 ?; n/ D/ r$ _- ^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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5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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