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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:1 j- M* k; t' }- @/ B
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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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$ h* s2 H3 C5 }3 p0 ^. ?' qAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:) O: [& Z( s2 G" S% f0 t: b* j
- m+ k" b; r+ ~# x: D$ }$ {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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! f3 t) _$ U" D( E/ z: K! I2) 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.& h- G5 J3 P) |+ Y2 y( }
& J! a3 b/ O/ |5 T( h3) The f/4 is lighter and smaller. Winner f/4.+ v9 Q( S5 e& E8 L- @' x
) {$ L4 `' N1 P4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.& S: F$ ^1 u4 n
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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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