Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-15-2010, 02:07 PM   #1
Senior Member




Join Date: Feb 2010
Location: Bærum, Norway
Posts: 102
Tamron 28-75mm f2.8 or Sigma 24-70mm f2.8?

Wich (in your opinion) is the better lens? Are there any "real life" differences in IQ?

04-15-2010, 03:33 PM   #2
Pentaxian
Moderator Emeritus




Join Date: May 2007
Location: Edmonton Alberta, Canada
Photos: Gallery | Albums
Posts: 10,648
I haven't used the Sigma and I think thaer are far fewer owners of it. But the Tamron is very hard to beat. It's smaller and lighter than the Sigma and sharp from wide open with decent close focus ability. I'd put that on the top of the list.

You should check the lens review data base for both here.
04-15-2010, 03:42 PM   #3
Veteran Member




Join Date: May 2009
Location: Ankeny, Iowa
Photos: Gallery
Posts: 388
don't leave out the Tokina AT-X 28-80mm F2.8 SD AF PRO
04-15-2010, 03:48 PM   #4
Pentaxian
Moderator Emeritus




Join Date: May 2007
Location: Edmonton Alberta, Canada
Photos: Gallery | Albums
Posts: 10,648
Luke, that would be great and a nice lens, even if it is much heavier than the other 2. But it's nearly impossible to find and long out of production.

04-15-2010, 04:12 PM   #5
Veteran Member
jct us101's Avatar

Join Date: Jun 2008
Location: Rohnert Park, CA
Posts: 3,695
The Tamron is the best lens there. Unless you get the newer HSM Sigma 24-70mm, then it's going to have an 82mm filter size, which will probably amaze you by the overall size of it and the lens. The tamron is a much smaller (and a little bit lighter, but much sturdier feeling) lens that also has some great quality to it. It's also the only lens that I've seen almost double it's used value in less than a year, so I would definitely recommend it.
04-15-2010, 04:57 PM   #6
Forum Member
PinarelloOnly's Avatar

Join Date: Jan 2009
Location: Shoreline CT
Photos: Gallery | Albums
Posts: 86
I'm set on the Tamron 28-75 as my next zoom down the road.

I also considered the Sigma 24-70mm but after actually handling the Sigma at
B&H in NY last summer, I'm not interested in such a large lens.

Don't get me wrong itís not a negative, the Sigma 24-70mm really is a nice lens
but it's a ridiculously big lens in a cool way if you like a large heavy glass, just not
for me and something to consider in your type of shooting that you do.
04-15-2010, 05:29 PM   #7
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,399
when I went through this process I settled on the tamron, I looked at not only the sigma 24-70 but also the 24 - 60

The deciding factor was the filter size, I had a lot of 67 mm filters
04-15-2010, 10:12 PM   #8
Veteran Member
Pentaxor's Avatar

Join Date: May 2009
Location: Vancouver, B.C.
Photos: Gallery
Posts: 6,513
Tamron 24-75

pros:

better IQ than the Sigma although Sigma is already have excellent IQ (not worse but great as well).

smaller and lighter.

cons:

QC maybe inconsistent and may have some issues (hit or miss) but you have 6 years warranty

lesser wide view (only 28mm)


Sigma 24-70

pros:

great IQ

wide FOV at 24mm

cons:

big and heavy

04-16-2010, 05:51 AM   #9
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,399
QuoteOriginally posted by Pentaxor Quote
Tamron 24-75

pros:

better IQ than the Sigma although Sigma is already have excellent IQ (not worse but great as well).

smaller and lighter.

cons:

QC maybe inconsistent and may have some issues (hit or miss) but you have 6 years warranty

lesser wide view (only 28mm)


Sigma 24-70

pros:

great IQ

wide FOV at 24mm

cons:

big and heavy
All of your points are valid, and were part of my decision process as well when I took the tamron, to fit between my sigma 10-20 and 70-200. The gap between 20 and 28 mm concerned me a little, but in the end, what made the difference is that at the time I bought it, I already had 2 different 67mm graduated ND filters and a polarizer because I already had 2 other lenses with this filter diameter. THose filters cost a lot, and when you go to the 82mm diameter of the sigma, almost double again. You need to think system a little. As for the gap, I have an FA-J 18-35 (which also uses 67 mm filters) so it was not a real issue for me.
04-16-2010, 07:26 AM   #10
Veteran Member




Join Date: Mar 2007
Location: Boston, PRofMA
Photos: Albums
Posts: 3,053
The 28-75 has better image quality (less flare) than the 24-70 (unless you mean the HSM which is better than Canon's L glass). The problem w/ all of these is quality control sucks. I went through 3 copies of the Tamron before giving up...BF/FF issues, haloing, etc. Haven't figured out whether to look at the HSM or keep trying Tamron roulette...
04-17-2010, 03:59 AM   #11
bfo
Senior Member




Join Date: Feb 2010
Location: Bærum, Norway
Posts: 102
Original Poster
QuoteOriginally posted by kenyee Quote
The 28-75 has better image quality (less flare) than the 24-70 (unless you mean the HSM which is better than Canon's L glass). The problem w/ all of these is quality control sucks. I went through 3 copies of the Tamron before giving up...BF/FF issues, haloing, etc. Haven't figured out whether to look at the HSM or keep trying Tamron roulette...
I ment the non-HSM. But that was because I thought the HSM and non-HSM were similar optically. If they are not I guess I have to consider the HSM seriously. I'm afraid this will get rather expensive
04-17-2010, 04:00 AM   #12
bfo
Senior Member




Join Date: Feb 2010
Location: Bærum, Norway
Posts: 102
Original Poster
...and by the way, Thanks for your feedback guys.
04-17-2010, 04:56 PM   #13
Veteran Member
jct us101's Avatar

Join Date: Jun 2008
Location: Rohnert Park, CA
Posts: 3,695
QuoteOriginally posted by kenyee Quote
The 28-75 has better image quality (less flare) than the 24-70 (unless you mean the HSM which is better than Canon's L glass). The problem w/ all of these is quality control sucks. I went through 3 copies of the Tamron before giving up...BF/FF issues, haloing, etc. Haven't figured out whether to look at the HSM or keep trying Tamron roulette...
If it's front of rear focusing, Tamron will take it in for free, at least with this lens. I've seen people do that and not get charged because it's a pretty big problem (Sigma does the same thing with it's 24-60mm lens which has the same problem). I agree that too many of these lenses have a lot of quality control problems though.
04-30-2010, 05:54 PM   #14
Site Supporter
NeverSatisfied's Avatar

Join Date: Dec 2007
Location: S.E. Michigan
Posts: 666
QuoteOriginally posted by bfo Quote
I ment the non-HSM. But that was because I thought the HSM and non-HSM were similar optically. If they are not I guess I have to consider the HSM seriously. I'm afraid this will get rather expensive
Their optical formulas are different. The HSM is said to be a good lens but it's awfully expensive in comparison, and like Lowell said, 82mm filters, $$.
04-30-2010, 06:29 PM   #15
Pentaxian
philbaum's Avatar

Join Date: Oct 2007
Location: Port Townsend, Washington State, USA
Posts: 3,659
I just bought the Tamron 28-75 within the last month and its everything people said it was:

sharp as a tack

the zoom is a little stiff to move, but i like it that way - no lens creep so far

lightweight and balances very well with my K20

haven't noticed any focus problems with it.
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!
k-mount, pentax lens, sigma 24-70mm, slr lens, tamron 28-75mm f2.8
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wanted - Acquired: sigma 17-70mm or tamron 28-75mm f/2.8 kjfaust Sold Items 1 01-26-2010 07:25 PM
For Sale - Sold: Pentax DA50-200mm, FA50mm, M50mm f2, Sigma 24-70mm, Tamron 28-75mm ndy4eva Sold Items 9 09-04-2009 09:20 AM
For Sale - Sold: Two lens for sell- DA 70mm/2.4 and Tamron 28-75mm/2.8- In Box qqspm Sold Items 10 01-29-2009 08:50 PM
Pentax FA 28-70mm f/4 vs Tamron 28-75mm f/2.8 bc_the_path Pentax SLR Lens Discussion 8 02-21-2008 01:36 PM



All times are GMT -7. The time now is 02:25 AM. | 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