Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-31-2009, 05:58 PM   #1
Pentaxian
raider's Avatar

Join Date: Jul 2007
Location: Perth, Australia
Photos: Gallery
Posts: 1,931
DA17-70 or Tamron 28-75 for K-7?

Which lens is better as a walk-about lens for K-7? The DA17-70 or Tamron 28-75?

The DA17-70 has wider angle, SDM motor but it is a f4. The Tammy is not as wide but it is an f2.8, not to mention that it is also a FF lens.

Opinions?

07-31-2009, 06:59 PM   #2
Pentaxian
LeDave's Avatar

Join Date: Jun 2009
Location: Minneapolis - St. Paul
Photos: Gallery
Posts: 2,896
You also might want to consider a Sigma 17-70!
07-31-2009, 07:01 PM   #3
Veteran Member
GLXLR's Avatar

Join Date: Feb 2009
Location: Sugar Land, TX
Photos: Gallery
Posts: 686
I am confused. Don't you already have the 28-75mm?

But answering your question: The 17-70 and 28-75mm are two different lenses. If you are talking about outside, then the 17-70mm is great. If you are talking about indoors, the 28-75mm would be better a tiny bit.
07-31-2009, 07:05 PM   #4
Veteran Member
Andi Lo's Avatar

Join Date: Jul 2008
Location: Halifax, Nova Scotia
Posts: 2,925
QuoteOriginally posted by GLXLR Quote
I am confused. Don't you already have the 28-75mm?

But answering your question: The 17-70 and 28-75mm are two different lenses. If you are talking about outside, then the 17-70mm is great. If you are talking about indoors, the 28-75mm would be better a tiny bit.
That tiny bit is (very) often the difference between getting the shot and not getting the shot without resorting to flash

07-31-2009, 07:11 PM   #5
Loyal Site Supporter




Join Date: Mar 2009
Location: Southern Indiana
Photos: Gallery
Posts: 14,969
I would miss the wide end a lot on a walk around. If I really wanted f2.8, I would get the DA*16-50, but I think I would probably be satisfied with the 17-70 pretty easily. 28 mm is just not wide enough on an APS-C camera.
07-31-2009, 07:45 PM   #6
Igilligan
Guest




dont listen to these nut jobs...

The Tammy 28-75 is the bomb. It is pretty darn good! My favorite AF family / band lens. A face shootin' machine

But if you need a walk around lens... And not an indoor lens then the 17-70 is real nice too...


Oh what do you want to shoot with it? How are you gonna use it? That is what those nut jobs should have asked you Raider
07-31-2009, 07:45 PM   #7
Igilligan
Guest




Nut Jobs --- my word for the day!~
07-31-2009, 07:50 PM   #8
Veteran Member
creampuff's Avatar

Join Date: May 2007
Location: Singapore
Photos: Gallery
Posts: 3,955
The Tamron's zoom range is fine for film but on digital, it is simply not wide enough imo. I would opt for the Sigma 17-70mm, a good all rounder.

07-31-2009, 10:09 PM   #9
Veteran Member
Raybo's Avatar

Join Date: Dec 2007
Posts: 871
QuoteOriginally posted by Igilligan Quote
Nut Jobs --- my word for the day!~

I was just goin to quote you on "nut jobs"
08-01-2009, 02:48 AM   #10
Veteran Member
res3567's Avatar

Join Date: Sep 2008
Location: Houston Tx.
Photos: Gallery
Posts: 1,876
QuoteOriginally posted by Igilligan Quote
Nut Jobs --- my word for the day!~
LOL!!!!!!
08-01-2009, 04:37 AM   #11
Pentaxian
raider's Avatar

Join Date: Jul 2007
Location: Perth, Australia
Photos: Gallery
Posts: 1,931
Original Poster
Thanks for all the feedback. I do indeed have the Tamron 28-75 and just as Igilligan puts it, this lens rocks and I use this lens for both indoor and outdoor shots. It is a tack sharp lens. However, I am consistently finding that the 28mm wide end is just not wide enuf and on a lot of occassions, I end up having to swap to the DA14 to take the shots, only to swap back again to the tamron.

As many companies are now "right-sizing" their organization, I am now thinking of "right-sizing" my lens collection I am thinking of replacing the Tamron 28-75 with a lens that is a bit wider but I still want to maintain my 70-75mm tele end. I need a walk-about lens with the ability of taking landscape shots as well as some street shots (hence the 70-75mm tele end) as well as a lens that can at least allow me to use during indoor events like the Tamron can. If I really want a "Wide" lens, I will use my DA14. Otherwise, I think maybe a focal length 16 or 17mm should do the trick. 18mm as on my kits lens is not really wide enuf though.
08-01-2009, 04:44 AM   #12
Pentaxian
raider's Avatar

Join Date: Jul 2007
Location: Perth, Australia
Photos: Gallery
Posts: 1,931
Original Poster
Just check out the Sigma 17-70. Is the Sigma better than the Pentax DA17-70? The DA has SDM motor but a constant F4. The sigma has bigger aperture (f2.8) at the wide end but smaller at the tele end at f4.5. The DA also cost about AUD200 more than the sigma. Is the sigma better?
08-02-2009, 01:13 AM   #13
Pentaxian
LeDave's Avatar

Join Date: Jun 2009
Location: Minneapolis - St. Paul
Photos: Gallery
Posts: 2,896
I've read quite a bit about both and I heard that the DA 17-70 isn't worth it over the Sigma 17-70. From what I've researched, the IQ-wise is nearly the same; and most people who bought the DA 17-70 expected it to be significantly better than the Sigma 17-70 due to the price, but nope.
08-02-2009, 01:58 AM   #14
Veteran Member




Join Date: Nov 2008
Location: New York, NY
Posts: 384
I own the SIGMA 17-70 and am very please with the sharpness of the lens, which in some case compare fairly to my DA*50-135mm! If it were constant 2.8, it'd be the perfect walkaround lens for me, but alas we can't have everything
08-02-2009, 03:20 AM   #15
Site Supporter
hinman's Avatar

Join Date: Oct 2006
Location: Fremont, CA
Photos: Albums
Posts: 3,425
I have both the Tamron 28-75mm f/2.8 and Sigma 17-70mm f/2.8-4.5. In my opinion, it is difficult to replace the Tamron and I will encourage you to have 2nd thought in the downsizing . It is the best bang for the buck in my book for portraits, events, indoor and outdoor that need fast speed. Of course, it lacks the wide angle making it less fit for walk-around. Hence I have the Sigma 17-70mm f/2.8-4.5 to fill the shoe. The sigma is the best walk-around in my gear. If you are NUTS like me, get both and feel guilty for the pleasures afterward -- I love companions for LBA.

You can pair the Tamron 28-75mm with a good prime as in Pentax DA 21mm f/3.2 or a wide zoom with Pentax DA 12-24mm, Sigma 10-20mm, or the fun-factor Pentax DA 10-17mm f/3.5-4.5 (15-17mm is not much in the fisheye effects).

The Pentax DA 17-70mm f/4.0 will be an outstanding lens to have for walk-around, I find it a bit expensive to call it a value lens and it is not weather-proof like the DA* lens. Had it had weather proofing, it will be the ideal walk-around for outdoor.

The Sigma shares the same focal range, though not constant in f/4.0, its f/2.8 should cover a good range from 17mm to 3?. Overall, it is a faster lens than the DA. In terms of color and IQ, I will assume the DA will fair better. Overall, the Sigma is a wonderful lens that I mark it as a value lens in my book for walk-around purpose. But if you ask me to pick 1 between the Sigma 17-70 and the Tamron 28-75, it will always depend on the task. I use the Sigma for outdoor, trips and I use the Tamron for events and indoor. Anything that demand speed, best IQ goes to the Tamron. If I have to downsize from 2 to 1, I will keep the Tamron.

Thanks,
Hin

Last edited by hinman; 08-02-2009 at 03:30 AM.
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!
da17-70, k-mount, lens, pentax lens, slr lens, tamron
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: DA17-70mm SDM (Worldwide) greasemonkey Sold Items 2 05-30-2010 07:30 PM
Send DA17-70 for repair? le_roi_ponpon Pentax SLR Lens Discussion 5 03-07-2010 08:45 AM
DA17-70 - some samples have bayonet sealing, some - not ogl Pentax SLR Lens Discussion 1 12-07-2009 02:48 AM
DA17-70/4 SDM at china take-that Pentax News and Rumors 135 05-26-2008 01:51 AM
DA17-70: was that a DA16-45-based mockup only? Ivan Glisin Pentax SLR Lens Discussion 11 02-25-2008 06:25 PM



All times are GMT -7. The time now is 06:46 PM. | See also: NikonForums.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