Inner Focus wrote: > Hello, I'm new on this list. Since I've seen some people curious about Sigma > plans for the future, I decided to share the following with you. > > > > I was interested in buying a few Sigma lenses for my Samsung GX-1S, so I > mailed the USA, UK and France Sigma representatives asking them if they plan > to introduce HSM on Pentax lenses in the near future. The answers were the > following: > > 1) USA: > We are not working on that at this point in time. If any changes we will > make an announcement on our website. > > 2) UK: > At present we have no plans to produce our Pentax lenses with HSM. The > majority of Pentax cameras cannot take the HSM system. Sigma may decide > to produce Pentax HSM in the future. > > 3) FR: > A ce jour, cela > n'est pas prévu. > (Translation: Sofar, this is not planned.) > > Comments are useless... :( > > OK, I also have a question: what's the advantage of ultrasonic motors? I'm > interested in AF speed, since I've had a lot of trouble with my camera and > it's kit lens (annoying AF hunting or even impossible AF in not-so-low :( > light). > The advantage? Silence. Focus speed, (and hunting), is unchanged. However all the Pentax SSM, (same as USM AFAK), have wider apertures, which does make quite a big difference in focus speed and accuracy > About ultrasonic motors (technical article): > http://en.wikipedia.org/wiki/Ultrasonic_motor > > PS: is HTML formatting of emails allowed on this list? > No. > A.M. > > > > > > ____________________________________________________________________________________ > Get easy, one-click access to your favorites. > Make Yahoo! your homepage. > http://www.yahoo.com/r/hs > > >
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