 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:
- t3 H/ ~: s4 g2 r9 f5 ~' Z% {/ D2 D2 P! B, R0 D" V
F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。" x' l7 H6 v) h5 n9 s! M4 m! O: x
4 J% h. k7 E, R4 V
**********************************8 P" O3 ~( u {" o' _
Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
$ v9 D/ F+ `& Q3 {4 G
6 l) H3 A1 }# S0 S6 ]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., {( h. k( H9 g, P: c& g
+ T2 k9 ]5 U* `" S) r" A0 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.$ M# N9 Q. V% N
' y, a7 F0 I1 w a' h$ K; v3) The f/4 is lighter and smaller. Winner f/4.
5 u" \* }' P8 I9 e% @- |
8 J) q3 q% q2 h9 A) |7 y/ O* n4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.) o# X6 g! {5 W# y: b9 [: a0 u5 h
8 I4 r. U5 C- k5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
|