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:" }! ^8 A/ g; s6 E6 X6 T
2 Z( |9 s1 c# d! Q/ E8 w0 T y: ^" N
F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
4 x: M) b( c- ~, S9 F7 n" w$ E6 b& a# ^+ d
**********************************: p8 {0 C6 R3 \3 R* _* K. N' C
Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
4 [ z5 B! S; W9 w- x2 Y, U; M( j5 b, b# M' b" O0 r
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., K! X9 C2 ^' ^2 B
0 g8 ?) j! |+ l2 M7 z f: R. D2) 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.$ @# c E( f4 i4 D+ |& e% u
' C i+ O* ?% u- ^* G
3) The f/4 is lighter and smaller. Winner f/4.
2 _ Q5 @# y+ s) c
- s+ L, A0 C+ i4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.
3 D" D2 k) e6 k* i
- A3 _1 F2 g* |0 r- q8 a5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
|