 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:
9 E% M$ f7 z4 {9 r4 L$ S1 h0 [+ G& V+ H/ R% ^0 n, H) g
F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。, q+ q% y. a2 R
' G; V5 d5 Y6 B$ M8 d- T
**********************************
$ t4 A' _( J0 ]) k9 g, p3 @Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:. ^7 M/ e- |3 Z4 ^
$ w0 X- g ? I$ l+ L
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.$ W7 g/ }8 J' ?
8 H0 G' _( M9 c- l) n& d. A9 e& r" F
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.
2 t- g% S3 j) |0 P+ v
* l, R# X) e: V! f$ @% G5 q, Q3) The f/4 is lighter and smaller. Winner f/4.: `; u- i3 z1 [+ _
/ H4 ~3 Z4 n" l$ _/ [( @8 [* H4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.
: A# |% Y7 v: m4 _" d
, Z1 [% b3 [& |5 |; Z. T5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
|