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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:
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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。; I1 {2 W' Z2 |+ m- j
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+ t5 N: @/ ]2 G: Q9 KAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:1 D* k1 T3 v+ @; F2 ?) j
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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.& e$ h3 N e8 G1 O0 D
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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) The f/4 is lighter and smaller. Winner f/4.
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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." W0 m& v" @# J, \; A |' h6 r+ o5 Z
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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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