 鲜花( 21)  鸡蛋( 0)
|

楼主 |
发表于 2010-10-5 20:41
|
显示全部楼层
正好刚看到一个类似的问题在别的英文论坛:
- @- E1 C! i1 \& s8 }) t/ q: F9 W
F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。' p: m+ O$ Y1 _$ t/ Y1 L1 L- ?
& J+ F5 n3 f2 @# X8 l. T& O5 I7 f
**********************************. y# [! i8 `# B9 ?; e' x B
Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:+ f$ F$ c$ H3 ^0 E" w, j; c
) g; H! J" w* ?% G( m6 K1 u. m
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.' G# d x: j: z2 D8 H
9 c, \$ U8 ^: B2) 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 Q, }; j& ]! Z q+ W0 D
( k& {: e0 n B! }5 a; y8 V2 `
3) The f/4 is lighter and smaller. Winner f/4.# V/ X7 a9 ?+ H1 o8 t/ e
, }) }' m( K0 d
4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.
$ i0 O- J2 _3 W" S4 c/ I# n
, b2 J3 d+ a+ D$ F( j& {5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
|