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楼主 |
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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3 b5 p+ Q+ S3 |F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。$ p: B5 G& m5 j5 \. k
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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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3 l$ o9 h6 f6 Y9 b6 g6 f, y3 N' e) ^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$ [0 m# f) L2 O# q
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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.+ `3 \0 N2 ~# D+ t+ r7 D& h: C
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3) The f/4 is lighter and smaller. Winner f/4.) c, r, f! @& V( t
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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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