 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:
! z) u! S4 B) m. }2 v9 i
$ F9 y+ F& ]# ~* oF4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。, K1 h9 O1 c( A0 L5 B0 _
" t" Z# m" k6 x) w* d" F- P/ I**********************************
! M9 M' b/ q0 G- z" [; m: hAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:. p" m! C8 S/ e2 B" n2 J3 h
5 M# e x3 \5 _
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/4.3 \# I& d6 |; U" i
/ t6 s6 _ @9 @4 p5 f! m7 v4 J
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.
* _9 w' T' b6 Z
+ G8 u% l0 b3 U: Z" }3) The f/4 is lighter and smaller. Winner f/4.; [- P( }# C* V5 t# x
( _- T$ ?" w+ H. H, [6 k0 F
4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.4 `: P% d! _, y6 M. K+ s
% `% Y/ x. ~- F" J
5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
|