鲜花( 21) 鸡蛋( 0)
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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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7 w4 ^% S) Y* E& nF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。$ d/ n0 Z8 C& Q* K2 ~; `7 |: t$ P- T
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Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:9 E- b/ G9 g$ X3 T% V: \ 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.
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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/2.8.2 `( o- y6 d% f% E% h
' S) Y9 T' c* p. ~8 ?3) The f/4 is lighter and smaller. Winner f/4., F! U4 i1 y& H# @
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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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