[Rover]

"Because they could" is the only reason I could see for the pricing of the Nikon 58. Being punished by Sigma serves them right. Though, of course, that 58 unit has quite a following. Even if I have a nagging suspicion that when people are defending it by speaking of "character" and "test charts don't show everything", they're really trying to defend their choice of inferior quality gear so that they don't look like simpletons with money to burn (that, of course, is an exaggeration on my part, but you get the idea).