mine has been OK optically. it is not as sharp as i would like in the corners, but it is not bad.
Herb... ----- Original Message ----- From: "whickersworld" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, June 21, 2003 11:34 Subject: Re: Lens Mount Progress > I coveted the Sigma 15-30mm EX lens after reading a review > in "Amateur > Photographer" which praised it to the heavens. However two > friends bought > them and were extremely disappointed. One got a refund, the > other got a new > lens and *then* got a refund, because it was even worse than > the first. > > John
