Sounds a bit like my Ef430 flash. This had problems on the MZ-S where it kept cycling through the focal lengths non stop. Sigma had not tried it on the MZ-S as it had only just come out at the time, but they got one and confirmed the problem. The flash needed a new chip and I had to send it to Sigma Uk who sent it to Japan as they had only just developed the new chips and had to fit them there at the time. Shame it didnt work to start with, but then Pentax must have changed what seemed like a relatively simple communication mechanism - not really Sigma's fault. Sigma were almost flawless in dealing with the problem, and it now works fine. They didnt even ask for proof of warranty or anything - just did it. The only slight hassle was that Sigma UK messed up the customs forms slightly and it was delayed for a while, but then they were a new company (just taken over from Jenoptic) at the time.
This is useful as I was just about to buy a 70-200 for my MZ-S. I will now wait - please keep us updated. I have no problem with the Sigma 17-35EX, 28-70EX, or 70-300APO so surely there is no inherent flaw in Sigma's programming? I dont quite see what the problem is, especially if it has happenned in multiple (all?) samples. > -----Original Message----- > From: MPozzi [mailto:[EMAIL PROTECTED]] > Sent: 11 March 2002 10:43 > To: [EMAIL PROTECTED] > Subject: Re: Sigma 70-200mm f/2.8 APO > > > Hi Wendy, > I have the 70-200 f2.8 EX Sigma (one of the latest > models), and as a lens its fantastic in built, > sharpness, contrast and very slightly colder than SMC > glass. > > HOWEVER (perhaps of general interest to the PDML), the > lens seems to be having a problem with my MZ-s in > terms of autofocus. It tends to be slightly out of > focus when using the Autofocus, especially noticeable > at the 200mm end. > > Now, I've tried the lens on the z-1 and it works fine, > I've tried Pentax lenses ans the 28-70 f2.8 Sigma on > the MZ-s ad it works fine. > > So: rapid conclusion is that there may be a problem > with the compatibility of this lens with the MZ-S. > I have sent it to Sigma Italy, they have verified the > presence of a problem (with more than one 70-200mm > f2.8 lens) and they are corresponding with Japan to > see if its a problem with lens software. > > So far they cannot find out what's wrong. but are > working on it. > > WIll keep the list posted > > Michele > > > > --- wendy beard <[EMAIL PROTECTED]> wrote: > > Hi All, > > > > First question: > > Does anyone have experience of the > > Sigma 70-200mm f/2.8 APO EX ? > > (or the older 82mm filter size 70-210) > > > > Second question: > > Cameraworld of Oregon - good, bad, indifferent? > > What's their relationship > > with KEH? > > > > I have a pentax 80-320 already, but am looking for > > something a little > > faster for the dog agility trials I go to. > > Unfortunately, I don't have an > > unlimited budget! > > > > tia > > Wendy > > > > --- > > Wendy Beard > > Ottawa, Canada > > mailto:[EMAIL PROTECTED] > > home page http://www.beard-redfern.com > > - > > This message is from the Pentax-Discuss Mail List. > > To unsubscribe, > > go to http://www.pdml.net and follow the directions. > > Don't forget to > > visit the Pentax Users' Gallery at > > http://pug.komkon.org . > Try FREE Yahoo! Mail - the world's greatest free email! > http://mail.yahoo.com/ > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
