Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-06-2014, 08:49 AM   #1
Senior Member




Join Date: Jan 2008
Location: Central Canada
Posts: 156
Pentax 18-135 or Sigma 18-200 contemporary?

The new Sigma 18-200mm f3.5-6.3 DC Macro OS HSM contemporary has garnered some decent reviews.
Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM review - Introduction - Lenstip.com
Sigma 18-200mm f/3.5-6.3 DC Macro Contemporary Lens Review
I'm considering buying it instead of my original choice, the Pentax 18-135mm. the Sigma has a lot longer reach, potentially sharper, nearly exact same weight, size and price(Canada), but no WR, which I can do without in exchange for better IQ.
Primary use: :dogs outdoors
Any thoughts, for or against, going with the Sigma? thanks


Last edited by kevinfox203; 12-06-2014 at 02:10 PM.
12-06-2014, 09:17 AM   #2
Junior Member




Join Date: Nov 2014
Posts: 30
Looks great for walk around lens, if u don't have one... I personally would like something faster on the 200 end if it's in the budget. What other lenses you have? For my self, one WR is a must in the kit wheather is the 18-55 or the 18-135. I don't have the 18-135 for pentax, but had it in canon mount and was my walk around lens paired with the 55-300, if I needed the extra reach and slightly faster at the 200/300 end
12-06-2014, 09:45 AM   #3
Senior Member




Join Date: Jan 2008
Location: Central Canada
Posts: 156
Original Poster
QuoteOriginally posted by outcast86 Quote
Looks great for walk around lens, if u don't have one... I personally would like something faster on the 200 end if it's in the budget. What other lenses you have?
I was away from Pentax for a couple years but I'm just back in with new K5 11s and 40mm Ltd. A walk around zoom is next on my shopping list

I wonder if the Sigma's AF is as quick and accurate as the Pentax is reported to be.. No Pentax user reviews to be found

Last edited by kevinfox203; 12-06-2014 at 09:59 AM.
12-06-2014, 09:59 AM   #4
Junior Member




Join Date: Nov 2014
Posts: 30
Congratulations on the buy! 40mm Ltd., a great lens, but still, what else your budget can get you? I personally would love to have the Da*16-50 and Tam. 70-200 2.8, but so far it's way out of budget for the time being, that said I will take 2 fast zoom over the one slower walk around, also what is your most used focal range? What other brand camera/lenses are you coming back from? Ultimately it's entirely your decision what will serve you best

12-06-2014, 02:27 PM   #5
Senior Member




Join Date: Jan 2008
Location: Central Canada
Posts: 156
Original Poster
The range I'd use the most is 50-150mm
Size and weight keep the Tamron 70-200 2.8 off my radar- I want something under 600g, relatively compact, quick AF and best possible IQ. I rather stay away from SDM lenses so that puts the 18-270 out of the picture too.
Anyone have other suggestions?

Last edited by kevinfox203; 12-06-2014 at 02:33 PM.
12-06-2014, 02:30 PM   #6
Veteran Member




Join Date: Dec 2011
Location: UK
Posts: 440
QuoteOriginally posted by kevinfox203 Quote
The range I'd use the most is 50-150mm
DA 55-300mm WR + 100mm DFA WR macro ... should give you pretty good cover and WR
12-06-2014, 04:47 PM   #7
Junior Member




Join Date: Jan 2010
Location: Laoag City
Photos: Gallery
Posts: 44
I have the pentax 18-135 and 55-300. I don't think there's a huge difference in field of view between 135mm and 200mm. I suggest the Pentax lens over the Sigma just because of the WR, which allows for more shooting opportunities especially around dogs.
12-07-2014, 01:40 PM   #8
Senior Member




Join Date: Jan 2008
Location: Central Canada
Posts: 156
Original Poster
QuoteOriginally posted by Conqueror Quote
DA 55-300mm WR + 100mm DFA WR macro ... should give you pretty good cover and WR
Thanks for the suggestion. Both have good IQ and would fit my size requirements but AF isn't great on either, from what I've read.

12-09-2014, 02:15 PM   #9
Veteran Member




Join Date: Dec 2011
Location: UK
Posts: 440
I've found the 55-300mm DA (non-WR) metal mount AF reasonable... thought noisy... but that doesn't bother me

Haven't used AF much on the 100mm DFA WR
12-09-2014, 11:11 PM   #10
Veteran Member




Join Date: Dec 2010
Location: SoCal
Photos: Gallery | Albums
Posts: 517
Interesting... a new Sigma 18-200mm OS.
I have the 'old' beater lens... Sigma 18-200mm f/3.5-6.3 DC (not even APO!)

I have used it a LOT as my walk around / vacation lens. Its pretty beaten up (slight haze due to excessive moisture in Alaska rain + humidity condensation) and took a drop on my old K-x.

I can't speak for the newer lens, but I've used the DA 18-135mm WR, and I like it a lot (lens rental to Hawaii).
Personally, if I go back through 'all' of the pictures that I take, I don't use the 200mm (probably 100-200mm range) very much. I didn't even miss it on the 18-135mm when I used it. Mostly because in the middle of the 18-135mm WR, it was much sharper than my beaten Sigma, and the crop would do.

I did find in both cases (Sigma 18-200 DC and Pentax DA 18-135) the border/corners were mushy, and it wasn't always the best for landscape, but I do have some decent shots with it.
I do find myself leaning towards something sharper/faster more often. Eg. LA Autoshow - I took my manual Sigma 28mm f/2.8, and it did much better than the years in the past with the 18-200mm... just wish it was wider. Funny thing... the 28mm lens was $30.

https://www.flickr.com/photos/formercanuck/14744046850/

http://www.dslreports.com/pics/dimaging/1792675?folder=0
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!
dc, hsm, k-mount, macro, os, pentax lens, sigma, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Lens debate- Should I get the 18-55,55-200 or 18-135 when-daybreaks Pentax SLR Lens Discussion 18 10-19-2016 02:05 PM
Tamron 18-200 vs Pentax 18-135 Malak Pentax SLR Lens Discussion 12 09-11-2014 07:49 AM
Thematic Outdoors, in bad weather, using your DA WR zooms: 18-55, 18-135, 50-200. MD Optofonik Mini-Challenges, Games, and Photo Stories 3 05-11-2013 05:59 PM
16-45 or 18-55+21mm or 18-135 rob_k20d Pentax SLR Lens Discussion 34 12-09-2012 07:39 AM
pentax 18-55 + 50-200 or nikon 18-135? legolas Pentax DSLR Discussion 2 04-05-2007 04:44 PM



All times are GMT -7. The time now is 08:13 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