what do you mean by "corner" distortion? barrel or pincusion? secondly I have never a lens yet that stopping down reduced distortion, distortion is fixed regardless of fstop.
JCO -----Original Message----- From: Herb Chong [mailto:[EMAIL PROTECTED] Sent: Monday, October 18, 2004 10:05 PM To: [EMAIL PROTECTED] Subject: Re: Long zoom recommendations 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.
