Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-09-2010, 06:02 PM   #1
Forum Member
kxuser's Avatar

Join Date: Feb 2010
Location: Brooklyn
Posts: 71
17-70mm F2.8-4.5 DC Macro

Does anyone know why this lens is on backorder everywhere? Is it being updated? Is it just in high demand?

I would like to get my hands on one to test it out, but it is nowhere to be found. Any insight would be helpful.

04-09-2010, 06:06 PM   #2
Veteran Member
omega leader's Avatar

Join Date: Jan 2008
Location: Niagara Region, Ontario Canada
Photos: Gallery
Posts: 417
I believe Sigma is replacing it with the OS (stabilized) version.
04-10-2010, 12:39 PM   #3
Forum Member
kxuser's Avatar

Join Date: Feb 2010
Location: Brooklyn
Posts: 71
Original Poster
thanks for the response

Looks like you are correct.

I did some searching around the web, and all the major retailers have the OS version of the lens. Even Sigma's site labels it as "new!" I will probably have to spend the extra $80 and test this lens out.

Follow up question. Is the OS very helpful? I understand that it is an in-lens anti shake mechanism, but can anyone say from experience that the OS is much better? Also, with the OS on lens is it best to keep the K-x/K-7 shake reduction turned on or off?

Thanks
04-10-2010, 02:16 PM   #4
Veteran Member
FHPhotographer's Avatar

Join Date: Jul 2008
Location: Fountain Hills, AZ
Photos: Gallery | Albums
Posts: 1,298
Here's the first review I've seen of the new 17-70 OS and some sample test shots (Canon). I'm sure there will be more.
Edit: I downloaded the church shots and looked at them up close and, unless I'm doing something wrong, they're all soft. Interested in getting some other opinions,
Brian


Last edited by FHPhotographer; 04-10-2010 at 02:30 PM.
04-12-2010, 01:47 PM   #5
Forum Member
kxuser's Avatar

Join Date: Feb 2010
Location: Brooklyn
Posts: 71
Original Poster
OS

Was doing some googling and found this.
Sigma’s Optical Stabiliser system reportedly offers a shutter speed saving around four stops. It’s compatible with the build in anti-shake function found in Sony and Pentax bodies also.
I don't know how trustworthy the site is, but I found it here
04-12-2010, 02:20 PM   #6
Veteran Member
jct us101's Avatar

Join Date: Jun 2008
Location: Rohnert Park, CA
Posts: 3,695
I love the original 17-70mm, it is literally the sharpest lens that I have ever used. Apparently the Pentax mount is even sharper than my Canon mount lens that I had. If I could get an 18-135mm range lens with that sharpness I would never sell it.
04-12-2010, 05:44 PM   #7
Pentaxian
Arpe's Avatar

Join Date: Sep 2006
Location: New Zealand
Photos: Gallery | Albums
Posts: 4,344
It's only compatible because you can use one OR the other. Sigma themselves tell you to use only one of them at a time.
04-12-2010, 06:51 PM   #8
Pentaxian
bdery's Avatar

Join Date: Mar 2008
Location: Quebec city, Canada
Photos: Gallery
Posts: 5,826
I can only say that I love mine, it's my most-used lens. Excellent design, good balance between features, no real flaws.

04-13-2010, 06:04 AM   #9
Site Supporter
GeneV's Avatar

Join Date: Oct 2008
Location: Albuquerque NM
Photos: Albums
Posts: 9,775
QuoteOriginally posted by jct us101 Quote
I love the original 17-70mm, it is literally the sharpest lens that I have ever used. Apparently the Pentax mount is even sharper than my Canon mount lens that I had. If I could get an 18-135mm range lens with that sharpness I would never sell it.
The peak range is around 17-70 for a high quality zoom on APS-c. Manufacturers seem to be able to make inexpensive zooms and even superzooms that perform well at the wide end, but aren't all that "super" at the tele end. However, the second number keeps growing, when a far more useful vacation lens range would be a high quality lens at 16-135.
04-13-2010, 10:30 AM   #10
Forum Member
kxuser's Avatar

Join Date: Feb 2010
Location: Brooklyn
Posts: 71
Original Poster
thanks

QuoteOriginally posted by Arpe Quote
It's only compatible because you can use one OR the other. Sigma themselves tell you to use only one of them at a time.
Thanks for that answer. Thats what I was wondering.
04-13-2010, 02:11 PM   #11
Veteran Member
bc_the_path's Avatar

Join Date: Mar 2007
Location: Ankara, Turkey
Photos: Gallery
Posts: 390
It is the only lens that I regret having sold.
Recommended without reservation (with or without stabilization, if it is of the same optical formula).
04-13-2010, 02:14 PM   #12
Veteran Member
jct us101's Avatar

Join Date: Jun 2008
Location: Rohnert Park, CA
Posts: 3,695
I've had some lenses in this range that didn't turn out so nicely, but I agree that after 100mm things start to go downhill pretty fast.
04-13-2010, 06:30 PM   #13
Junior Member




Join Date: Dec 2009
Location: Houston, TX
Posts: 37
I just picked one up in the marketplace for a great price and have been quite pleased with the results. I haven't used it too much but I like what I'm seeing so far. It's a bit intimidating because of the humongous filter size when compared to the K-x body, but it gives the camera a real pro look that is actually somewhat pleasing.
04-16-2010, 03:50 PM   #14
Forum Member
kxuser's Avatar

Join Date: Feb 2010
Location: Brooklyn
Posts: 71
Original Poster
Just ordered the OS version from Amazon. That review gives it real solid marks, and right now I am still using my kit lens for the 18-55 range, so this will be a welcomed upgrade.
04-22-2010, 12:55 PM   #15
Forum Member
kxuser's Avatar

Join Date: Feb 2010
Location: Brooklyn
Posts: 71
Original Poster
finally arrived!

I was able to snag the lens before it sold out again from amazon and took some shots of it, and one of the lens mounted on the K-x.

Now to go test it out!
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
17-70mm f2.8-4.5 dc, k-mount, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Return my FA35mm f/2 & D FA100mm f/2.8 macro and get a Sigma 70mm F/2.8 Macro? aweir Pentax SLR Lens Discussion 9 04-12-2009 08:10 AM
Sigma 70mm f2.8 macro non-macro shots al_undy Post Your Photos! 5 03-25-2009 10:52 AM
Sigma 70mm Macro or Tamron 90mm Macro? Pentakun Pentax SLR Lens Discussion 19 08-01-2008 06:56 AM



All times are GMT -7. The time now is 06:21 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top