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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。$ {: c, t4 y: z" N6 O9 Y8 }7 t
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3 M" h" T# T$ Q- f- V( {Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:5 t; o+ g. ?" y8 m+ H1 q& j5 f
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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/4.4 d Z1 L5 E6 D# Y, s* N
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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.) x( ~) {4 ~6 J5 r {; h9 l2 K2 m+ d
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3) The f/4 is lighter and smaller. Winner f/4.; @2 N7 N# X) N% B5 J4 r N. z1 y* X
. ]: C( L) w# W3 W) O' Z4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.3 L4 h. }- r* F0 b5 L9 t8 }
- z/ K/ T! D+ k' M- s5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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