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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:4 d! Y5 B1 Y6 U2 s4 ]& G+ [
; W+ n [0 x6 q% W, dF4 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: R+ T! ~1 B: G/ q0 G% D- a0 T
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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.' `' n3 L; j/ @6 T
! r8 k k, A$ e z( U/ z' i5 f/ a& U2) 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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% w( \' h. P' X3) The f/4 is lighter and smaller. Winner f/4.4 @/ X% q' U- f% x% g- g3 q) F. A9 @
5 k; t6 r8 o9 E! ]4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.; s- E1 ] a6 K& ^4 y4 F) 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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