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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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0 N" s+ t6 q# k# g: eF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。5 J1 `0 ]. I$ e3 D
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N |9 Y4 Z m0 v$ P. L) z DAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:+ b" f8 l+ R. h% J8 D# j" f
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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.( ~5 |4 z6 z, W. G
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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.& b4 o( F8 D: `- Y: r, \
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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.
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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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