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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:& `5 H# w) H' Q- B) h1 f5 E& ^- A
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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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! F$ {" x+ E3 N4 _$ ZAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:# Z2 L4 a2 ]9 Y3 u, g: O
: _) z2 u6 e8 `7 X+ w* D" s1) 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.$ |1 C8 @% z, _& G7 f
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3) The f/4 is lighter and smaller. Winner f/4.
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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./ q' e8 y) g( ~) O, x
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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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