 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:
" c) @# r, r& Z Z! s5 G# Q7 {0 a* f' m. p: W& p+ V3 ^
F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。: l" H6 ]/ {. L- ~5 C
. }5 [ v, y" U0 z7 Y
**********************************1 |6 o k8 h5 k7 J' h
Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:0 i- A t$ E, B3 z0 ?
/ u* E% _) f9 |' m6 \3 R3 N8 p3 I
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.
0 m; s$ z. ^. c+ _. M4 h1 l3 w6 M
/ H4 S3 U9 G2 h/ c+ [5 t' t/ B2) 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.; I7 H% e( D+ \8 {; \
: {( b7 a$ @% h% N1 q% _9 }
3) The f/4 is lighter and smaller. Winner f/4./ D$ b4 N: C B9 V: @
( d% e1 F% e x* ^" T4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.8 n+ T6 t% T" f7 M* Y
7 M! m7 W* w) D. d7 k5 l' h5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
|