A ja bym chciał zauważyć taki drobny fakt z FAQ'a Sigmy :

Where are Sigma lenses made?
A: All Sigma products, lenses, cameras and flash units are manufactured exclusively by Sigma in Sigma’s own factory in Aizu, Japan. No Sigma Corporation product - lens, camera or flash - is manufactured outside of Japan. This is very unusual these days, as most companies have at least some of their products produced outside of Japan because of cost considerations.