Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
05-12-2011, 08:33 AM   #1
Site Supporter
Jean Poitiers's Avatar

Join Date: Apr 2011
Location: Lost in translation ...
Photos: Gallery | Albums
Posts: 16,474
Info on a Sigma UC Zoom 28-70 mm f2.8-4

Does anyone have any info on this lens? I saw that "Just me" asked about it last November but there was no info ... I picked up a used copy on a whim, but having mixed results with it. There's almost zero info on the web that I have found ... any help?!

05-12-2011, 09:49 AM   #2
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 42,354
This isn't a troubleshooting question; moved to the lens forum.

Is this the lens you're referring to: Sigma 28-70mm F2.8-4.0 Lens Reviews - Pentax Third-Party Lens Review Database ?

Or this one: Used Sigma Zoom Wide Angle-Tele 28-70mm f/3.5-4.5 Manual Focus ?

There are a few others in the lens database, so definitely check that out as well!

Adam Webmaster (Site Usage Guide | Site Help | My Photography)'s high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

05-12-2011, 11:52 AM   #3
Loyal Site Supporter

Join Date: Mar 2008
Location: N. Calif
Photos: Gallery | Albums
Posts: 2,588
I did use one of these some time ago - a very versatile lens - though could be more useful if it were 2.8 all thru.
05-12-2011, 12:39 PM   #4
Site Supporter
Jean Poitiers's Avatar

Join Date: Apr 2011
Location: Lost in translation ...
Photos: Gallery | Albums
Posts: 16,474
Original Poster
Photos of Sigma UC Zoom ...

Bonjour Adam,

Thanks for your message, and yes, this should have been a "lens forum" question ... sorry.

Attached are photos, and as "Just Me" previously stated, this lens has a 55mm diameter (not 58mm as the lens that is already in the Sigma review section) and its marked "Sigma UC Zoom" ... (UC = "ulta-compact" ? ... or "ultra-crappy", as I have read elsewhere). Again any help is greatly appreciated and as the French say, "Merci d'avance"! John de Poitiers

Attached Images
11-09-2011, 04:54 AM   #5
New Member

Join Date: Oct 2011
Photos: Albums
Posts: 1
Hey I have purchased this lens...I like it as a beginner and pretty decent results i have got out of it.

  • 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!
info, k-mount, pentax lens, sigma uc, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
DA* ZOOM and Pentax 1.7x AFA and SR info goldenarrow Pentax SLR Lens Discussion 25 01-10-2011 08:00 AM
Sigma UC Zoom 28-70mm 1:2..8-4 info required please Just Me Pentax SLR Lens Discussion 2 11-08-2010 11:54 PM
Hood info required for 100-300mm zoom samski_1 Pentax SLR Lens Discussion 6 05-16-2010 09:37 PM
Any info on Sigma Zoom AF 70-300mm f4.5-5.6? EsBee Pentax SLR Lens Discussion 3 05-30-2009 11:53 AM

All times are GMT -7. The time now is 02:03 PM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]