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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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+ f% L) z! e/ `' ^2 nF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。% D% o& f$ U2 A$ N7 |, T7 o
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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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8 V' \1 e: r0 z4 ?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/4.6 S, y8 z, Y" @, H- g$ H' U1 m
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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/2.8.5 b0 \7 K" u7 o1 Y# Q9 z E1 c
7 J/ n2 v+ `/ x* w5 G: E% B3) The f/4 is lighter and smaller. Winner f/4.$ m$ m9 v: N4 |$ r p1 c( m
& e" G/ j: G7 P- b# A( j, o, \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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