 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:
, I5 R2 N. i' U6 ~0 s. R
3 r7 X4 m7 }3 L$ aF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
/ h9 ]4 q4 h* o# u3 Z& i& L( h4 a; W# H6 ]& B
**********************************
! ]7 x; c) p4 O5 L2 R- T. JAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:$ R0 F3 s; h! M0 T
+ s& e% O3 Q9 n$ [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.
! T( I. [, \" h7 x3 x! `# P% I' n: u- \0 v/ ^! E$ C/ w, _4 D
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.
- c+ `1 R6 F0 @( _, y @! k+ H$ R) B' N6 [
3) The f/4 is lighter and smaller. Winner f/4.' M2 x3 p6 n9 }& h# w) K- f0 w
! ]5 J/ D/ @% M3 Y+ W8 t
4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.. }3 ~2 ?1 V; F5 d' ~! o) z
" S/ j O; I, L7 u/ A) F
5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
|