 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:, [5 ?, b8 a9 F0 }) s" b8 y
: Q/ ?7 n1 j/ n$ ?% e# B
F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。% T6 e4 E( K: G
* ~: ~' Z, g9 B**********************************6 ^% a; ^" o' E8 s; n( e, E
Anyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:% C' Y0 U) @( f7 T
7 l/ H# n6 N8 U1) 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.
B3 V, ^; C4 q. b( n! Z! f9 c% J) T9 e- g! t, ^% Y
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+ P# ~7 P$ Y" K
7 B0 [3 X$ v2 `. I, k3) The f/4 is lighter and smaller. Winner f/4.
4 Y8 d% ^7 V* F" A) p2 |3 E8 b4 R8 ]2 ?" c
4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.& D( S/ X' i1 a
0 o+ H$ W8 G& c3 c4 A) O* l
5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
|