at the long end, there is plenty of corner distortion unless you stop down a lot, even on the *istD. i got that i really don't use mine unless i have to forego the weight of my FA* 80-200/2.8.
Herb... ----- Original Message ----- From: "Don Sanderson" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, October 17, 2004 7:20 PM Subject: RE: Long zoom recommendations > I've been unhappy with my Sigma 70-300, especially on the ist-D. > I ordered an 80-320 Pentax from KEH last night after reading reviews. > The Sigma isn't really a bad lens, it just seems very inconsistent > from stop to stop and FL to FL. > I could never really predict what my results were going to be.
