"Hants" <marcin@WYTNIJ_TOhants.pl> wrote in message
news:4bb0d10f$1@news.home.net.pl...
> news:hoptgs$jkj$1@inews.gazeta.pl...

> Myslalem, nad tanim zamiennikiem i na stronie wrotniak.net znalalem cos
> tego typu: Sigma EX DC HSM 10-20 mm.

Hmmm.. Chyba sam znalazlem odpowiedx:

http://www.dpreview.com/lensreviews/sigma_10-20_4-5p
6_n15/page3.asp
Overall this suggests that the 10-20mm F2.8 will be a reasonably competent
performer on Four Thirds, but not outstanding. Compared to the Olympus Zuiko
Digital 9-18mm F4-5.6, the Sigma is simply outclassed in practically every
regard, with only its excellent control of chromatic aberration to boast
about. In contrast the Olympus is significantly sharper, especially wide
open, and has much lower distortion and falloff, making it the clear winner
in this contest (although it is also rather more expensive).