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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:2 x/ t4 z* M" D6 b" W( Y$ t- `
& J# D) o$ g9 {' l$ {6 a# w o& @F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
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6 \( }3 V+ B( l' `! OAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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/ R2 @+ N( D2 {7 V F% }5 ?1 l1) 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/2.8.0 g# C5 P3 @) e7 A8 N
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3) 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/2.8.1 Y, X/ H {2 [# w% q
! q4 {2 i4 X/ i( y* l. r# `, r H1 R5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
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