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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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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。; x0 ?1 l2 k# H4 t
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) U: B* f: Y% p1 e' h4 ^8 m# BAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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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.; c, b ^- Q% z7 ^; ]! s: a
) R' @" }8 ^. a7 N' M2) 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 x+ u4 H! K2 r$ F8 H/ P
: T5 G- d6 Q$ u1 m \/ c3) 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.. H5 d6 U, ^( z# X& P8 b
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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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