I have and love the 100-300/f4. Think of the 70-200/f2.8 with a longer reach. Only very slightly bigger and negligibly heavier. The consumer 100-300 does not even come close, its not in the same ball park. I got mine with a free 2* converter which was nice, but the AF does hunt like mad with this on as it is then f8 effectively. With the 1.4* sigma EX converter it does not have this problem. I used mine quite effectively hand held at the PDML UK in Duxford shooting planes and the AF was very good and the sharpness excellent.
I can give you more specific details or rave about it more if you want - let me know... Rob > -----Original Message----- > From: David Brooks [mailto:[EMAIL PROTECTED]] > Sent: 19 November 2002 13:08 > To: [EMAIL PROTECTED] > Subject: Anyone use the Sigma 100-300 f4 > > > Hi all. > Just wondering how many,if any, use or have used > this lens.My 'shooting eye'has gotten a bit worse over > the last while and if a new lens for my glasses doesnt > fix it, i might have to shoot more AF.I have the > 100-300 f4.7-6.7 ?? now which is ok,but i like the slower films > now and it would be helpfull to have f4 or better when > doing the horses. > I know FastPat has the 80-200 f2.8 Sigma and has good things > to say about it. > > Any comments out there. > > I'd be using the SF-1 for now but am still considering > looking for a used PZ-1p but they dont seem to be out in the > used stores in this area. > > Dave > > > Pentax User > Stouffville Ontario Canada > http://home.ca.inter.net/brooksdj/ > http://brooks1952.tripod.com/myhorses > Sign up today for your Free E-mail at: http://www.canoe.ca/CanoeMail > >

