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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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7 X- i: e) L {9 n- [ U' aF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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- i4 P# P1 W3 J$ u: `Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:& R; |- r* F3 L3 \( t) @9 Q/ _
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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.
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/ D% V+ L2 u; w. N/ H# y& A9 A2) 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.# h5 ?9 R7 d0 D* @
- p# N( [ m4 C& S: Z- I3) The f/4 is lighter and smaller. Winner f/4.) e2 s5 Q( D% e$ M, {
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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.
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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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