Hi Don, Just a word of caution, if you're planning to mate this lens with an ist D, don't. After my personal experience with it, and heck of a lot of probing, I more or less confirmed that Pentax and Sigma Japan are currently resolving an autofocus issue concerning the Sigma EX 28-70 2.8 DF and the ist D.
However, if you're planning to use this with a film body (I've used it on a 5n and an mz50), I'll vouch that it is a beautiful lens, great build, warm, contrasty glass, useful lens shade too. Plenty sharp at 2.8, but between 5.6 to 11 it's up there with the best of them. Here's a gallery of some shots which I only recently had time to update. All with the 28-70 2.8 and a 5n, except for 'Builders', 'Donna & Mel' and 'Pete & Christine' which were manually focused on an ist D. http://www.photo.net/photodb/folder?folder_id=309526 Cheers, Ryan ----- Original Message ----- From: "Don Sanderson" <[EMAIL PROTECTED]> To: "PDML" <[EMAIL PROTECTED]> Sent: Friday, October 29, 2004 10:29 AM Subject: Sigma 28-70mm F2.8 EX Aspherical DF vs 28-70 F2.8 Tokina ATX Pro > Now that I have decided that I need a short fast zoom I need a little help > deciding which one. > The Sigma is less than half the price of the Tokina, but how is the quality? > I've not heard anything bad about the EX series lenses but I'd like to hear > from someone that has used one. > > TIA > Don > >
