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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 k: M1 X- P8 s% N$ a/ v
. V l9 i. j GF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。9 R5 J" L; Y; `1 v2 {% ^2 f
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d8 ]5 m# ]) u8 DAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
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2 ~4 J6 {' a+ G1) 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.% c2 Z' n$ @7 k$ Y/ p5 l1 T
. t. d0 j9 `$ m- J& A6 J3) 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/2.8.3 B. D# d' }' n! d# ^! f# T
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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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