 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:+ z2 R/ v! K6 k% K& D
" N" @$ M! `+ X+ M. @5 \' ^; @" _F4 IS Vs. F2.8 non IS, 贴过来大家都评论评论。
+ r: R6 y4 u# Y- F
& d' Y+ B- w8 y- h( `5 c**********************************
1 E+ ^& g' \6 O+ L) ~1 R% q; HAnyhow, you pose a good question - f/4 IS or f/2.8 non IS. Here are the main points:
# R, H* s& |1 X% d# O, L4 w$ W1 j3 \0 j; t$ T# @, z* g( m
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.
7 V. q; f0 ]* |' D7 E% \0 P. l$ T" i; q: G
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.+ j& Z+ U/ T2 o; j) Z
( O9 O: |' i! ^3 z" ~, n! K" _) C
3) The f/4 is lighter and smaller. Winner f/4.
3 a" E" h: [) n' b8 H' _. I7 {. B( Q$ N. f6 b5 R I+ s( d6 d
4) The wider aperture of the f/2.8 can offer more creative possibilities, especially when taking portraits. Winner: f/2.8.* @2 b/ d, @, M R- q4 ?8 h
, }7 ?" b- S8 I% t! m W5) The f/2.8 has better bokeh (creaminess of the blurred areas). Winner: f/2.8. |
|