Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-29-2007, 06:26 AM   #1
Veteran Member
blwnhr's Avatar

Join Date: May 2007
Location: Tasmania, Australia
Photos: Gallery
Posts: 663
Replacement for my Sigma 18-125.

Someone asked this question a while ago but I am selfish so am starting my own thread.

I only have 2 lenses, the Bigma and my trusty Sigma 18-125 which I've had since I first stepped into DLSRs 2 years ago. I really like this lens. I love the range and associated flexibility, but it's time to upgrade.

I am about to buy the Sigma 10-20 F4-5.6 because I need the width for the work I'm about to do. I need something to fill the gap from 20mm through to about 70-80mm. I don't want to be busting the Bigma out to get just a little more length.

The other thing is I want a fast lens (F2.8). This just makes things really tricky. I'm not interested in a prime.

After getting the Bigma, which is part of the EX series, and seeing the great colour from this lens I am looking toward this range. Of course I am willing to look at other brands, including genuine Pentax, however budget has to be reasonable.

Has anyone any experience with the Sigma 18-50 EX DC F2.8? This lens covers the focal length I will be using a lot of the time but it's 75mm shorted than I'm used to.

What are peoples thoughts on the Sigma 17-70 F2.8-4.5? What focal length does it change from F2.8 to a smaller aperture? How does this compare to EX lenses?

I plan on keeping the 18-125 as a walkaround lens for non-important things, or if travelling light.

Thanks all in advance.

Adam.

08-29-2007, 06:43 AM   #2
Site Supporter
daacon's Avatar

Join Date: Mar 2007
Location: Alberta,Canada
Photos: Gallery
Posts: 20,831
Adam

I have the same Sigma as well as the 70-300 - I more or less replaced both of them with the new Tamron 18-250 3.5 -6.3 XR Di II LD IF MACRO as a more general purpose walk around lens. To date I have been very pleased with the results and I am going to sell my Sigma's I think. Only complaints I have is the zoom extends very easily so when I put it back in the bag I have to make sure the lock is on. Also at 250 gets a little shaky but what do you expect that is a huge range? On the plus side images are great and it is lightweight and very compact.

I also have the Tamron 28-75 f2.8 XR Di LD ASP IF MACRO based on recommendations here. It is a great lens (macro as well) . Very nice portrait lens - but personally I found that 28mm was not quite wide enough for every day shooting I like , but that is personal for sure

I have read good things about both Sigma's you have mentioned but have no personal experience so will let others comment. Personally I give both my Tamrons a huge thumbs up for the price they are great IMHO.
08-29-2007, 06:47 AM   #3
Veteran Member
Mechan1k's Avatar

Join Date: Jun 2007
Location: Sydney, Australia
Posts: 2,891
Have seen so many great images from the 17-70 ... haven't seen so much from the 18-50 (so I am unable to really comment on it).
08-29-2007, 08:13 PM   #4
Veteran Member
blwnhr's Avatar

Join Date: May 2007
Location: Tasmania, Australia
Photos: Gallery
Posts: 663
Original Poster
Would I be best to wait until the 17-70 DA lens is released to see what aperture it is?

08-30-2007, 05:47 AM   #5
Veteran Member




Join Date: Dec 2006
Location: Outside of Philly
Posts: 1,564
I use the Sigma 10-20mm and the Tamron 28-75mm to get my "short" coverage. Don't mind the gap between 20 and 28mm. The Tamron is great (do a search here for lots of praise/pictures/etc..). Good luck!
08-30-2007, 06:07 AM   #6
Forum Member




Join Date: May 2007
Location: Houston
Posts: 75
The Sigma 17-70 is my primary lens right now, and I love it. I can't tell you exactly where it slides out of f/2.8, but it's pretty quickly (around 23mm or so). Mind you, I don't do much 'low light' photography, so its not an issue for me. I primarily shoot from f/8-f/16.

I can tell you this much about it: I have not regretted buying the lens for one second.

!c
08-30-2007, 02:59 PM   #7
Site Supporter
Mallee Boy's Avatar

Join Date: Sep 2006
Location: Hindmarsh Isl. Sth Australia
Photos: Gallery | Albums
Posts: 3,490
Hi Adam,
Its a perplexing problem isn't it? One I go over a number of times, as I also have the 18-125.

This my kit, in order of purchase: started with *ist DS & 18-125, then came the Sig 135-400, followed by the Sig EX DG 24 f1.8 (low light), throw in a *ist DL & Pentax 18-55 , add a Schneider 50-200 & now add a Pentax DFA 100mm f2.8.

The kit now looks like this: DS & DFA 100 and DL & Sig 24, these lens stay on the cameras....and a pair of good walking boots for zooming.

I will occasionally use the 18-125 if in good light and the 135-400 for specific use. The 18-55 & 50-200 do not get a lot of use and even though I am tempted to take them on a forthcoming trip, I know I will reach for the two primes whenever I want to get serious, particularly as I love my landscapes and sunrise/set. We will also be spending time in the Californian Redwoods so I think the 24mm f1.8 may well come into its own, given the expected light.
Dont be too quick to discount the primes from your thinking.

Good Luck.
Grant
08-30-2007, 03:06 PM   #8
Veteran Member




Join Date: Aug 2007
Location: North Wales, UK
Posts: 645
I've just replaced my 18-55 kit lens with the Sigma 17-70 & have to say I'm very impressed - great lens, excellent contrast & sharpness, useful focal range too

simon

09-26-2007, 09:11 PM   #9
Veteran Member
blwnhr's Avatar

Join Date: May 2007
Location: Tasmania, Australia
Photos: Gallery
Posts: 663
Original Poster
Just to drag this topic up again, I was talking to my salesman friend at my local camera store and his thoughts were the Sigma 10-20 that I'm already getting, and get the Sigma 28-70 F2.8 EX DG. He has this lens for his Nikon and said he is extremely happy with this lens.

Thoughts?

I want F2.8 all the way through, and would like more reach than 50mm. (I'm also keen to stick to Sigma or Pentax as I can get wholesale price on these).
09-26-2007, 11:07 PM   #10
Veteran Member
Kguru's Avatar

Join Date: Jun 2007
Location: Perth - WestAust
Posts: 602
QuoteOriginally posted by blwnhr Quote
Sigma 17-70 F2.8-4.5 What focal length does it change from F2.8 to a smaller aperture?
Here's the spread found on my 17-70
17-22: f/2.8
23-35: f/3.5
36-66: f/4.0
67-70: f/4.5

Note only the last few mm is f/4.5 I can afford to not use. So to me it's f/2.8-4.0 which is not bad at all for a 4x zoom.
09-27-2007, 05:40 AM   #11
Veteran Member




Join Date: Dec 2006
Location: Outside of Philly
Posts: 1,564
Tamron 28-75mm. It pairs up nicely with my 10-20mm. Don't miss the gap between 20 and 28mm (hey, good excuse to buy a fast 24mm prime lens!)
09-27-2007, 03:00 PM   #12
Site Supporter
Mallee Boy's Avatar

Join Date: Sep 2006
Location: Hindmarsh Isl. Sth Australia
Photos: Gallery | Albums
Posts: 3,490
QuoteOriginally posted by GWP Quote
Hi Adam,
Its a perplexing problem isn't it? One I go over a number of times, as I also have the 18-125.

This my kit, in order of purchase: started with *ist DS & 18-125, then came the Sig 135-400, followed by the Sig EX DG 24 f1.8 (low light), throw in a *ist DL & Pentax 18-55 , add a Schneider 50-200 & now add a Pentax DFA 100mm f2.8.

The kit now looks like this: DS & DFA 100 and DL & Sig 24, these lens stay on the cameras....and a pair of good walking boots for zooming.

I will occasionally use the 18-125 if in good light and the 135-400 for specific use. The 18-55 & 50-200 do not get a lot of use and even though I am tempted to take them on a forthcoming trip, I know I will reach for the two primes whenever I want to get serious, particularly as I love my landscapes and sunrise/set. We will also be spending time in the Californian Redwoods so I think the 24mm f1.8 may well come into its own, given the expected light.
Dont be too quick to discount the primes from your thinking.

Good Luck.
Grant
Thought I had better explain myself Adam. (lotta people I know reckon thats not possible!)
I have since purchased a Tamron 70-300 to compliment both the Sig 18-125 & Pentax 18-55, particularly given that the 50-200 has gone AWOL.

Still like the primes, and will always carry one in any situation, but there is a lot to be said for the zooms when travelling when weight and 'portability' become issues.

Yep! It sure IS perplexing, apologies for the contradictions.
09-27-2007, 06:32 PM   #13
Veteran Member
blwnhr's Avatar

Join Date: May 2007
Location: Tasmania, Australia
Photos: Gallery
Posts: 663
Original Poster
Thanks for taking the time to replay guys.

For the type of shooting I'm doing at the moment zooms really appeal. However, I do like the idea of a nice fast prime.

My shopping list looks like this:

Sigma 10-20 - before Christmas
Sigma 28-70 - before Easter
Sigma 24 1.8 - mid year

Coupled with the Bigma I've got some serious range. However if the Sigma 70-200 f2.8 returns I will have one of those in an instant.
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!
bigma, f2.8, k-mount, length, lens, lenses, pentax lens, range, sigma, slr lens, time
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sigma 18-125 Mark Castleman Pentax SLR Lens Discussion 3 12-15-2008 09:57 PM
For Sale - Sold: FA: *ist DS, sigma 18-125, sigma EF-430 flash + other lenses... owlpages Sold Items 0 10-24-2007 06:28 AM
18-55 and 50-200 or Sigma 18-125 jamey15 Pentax SLR Lens Discussion 4 09-07-2007 09:58 AM
Alternatives to Sigma 18-125 ngkmh Pentax SLR Lens Discussion 11 08-08-2007 01:16 AM
Sigma 18-125 Mallee Boy Pentax SLR Lens Discussion 5 06-08-2007 12:23 AM



All times are GMT -7. The time now is 09:57 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