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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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& N& y! b. e7 u6 [F4 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:
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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. r- ?+ [$ j0 V. t( b1 N/ h8 A
! z A. s! I2 t+ S2) 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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" Q$ x' L7 ]+ k; d3 L4 l* B' Y4 N3) The f/4 is lighter and smaller. Winner f/4.+ g5 { S6 |2 i) E, d- G
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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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