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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:- s# S; r! N0 b5 X$ J
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F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。8 E' h% L5 i! {$ X
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9 E$ _ }7 b1 {& }3 d- X( ~$ b& d3 kAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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% k7 m' d' F& n$ X. n; |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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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.; A) B: Z2 P. v9 ]% b" @/ n6 _
; q( v& ` d4 y# d3) The f/4 is lighter and smaller. Winner f/4.
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. S8 o; [- \& n4 ]* O4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.1 x+ m: E+ `" t$ L) J
4 {, l. M- M: n5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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