Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
09-25-2010, 12:35 PM   #1
Senior Member

Join Date: Feb 2010
Location: tampa, fl
Photos: Gallery
Posts: 237
Pentax 50-135 vs Sigma 50-150 vs other suggestions?

I plan on purchasing a fast telephoto lens within the 50-200mm range. Now i know the top 2 picks are the pentax 50-135 or the sigma 50-150. if i missing one please make a suggestion. my main concern is longevity. i have read several issues with sdm failing as well as focusing issues with the sigma so im on the fence. my priorities are:

1 - reliability
2 - iq

i dont want to spend 700-900 bucks to have a lens fail in a year or two. the sigma offers a 4 yr warranty and is a little cheaper so that a big plus but of course i want to make sure im getting the best iq for the money.


09-25-2010, 01:31 PM   #2

I have 50-135.

Reliability: Well, my SDM doesn't work. It squeaks like a chipmunk. I use it as a manual focus 135 prime. If AF is important to you, I wouldn't buy one. Don't buy a second hand one at least. Buy a newer version perhaps, but I don't know if they are any different. BUT, I will say that DA*300's SDM with the newest firmware of K-7 is nothing like 50-135 (my copy anyway).

IQ: I would say that this is probably the sharpest zoom that I have owned. It rivals that of primes. Just superb. It is really a shame because, you know, SDM at the end of the day is a dud. DOn't plan on getting help from Pentax USA. They are really not "Pentax" people . . . . .

  • 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!
im, iq, issues, k-mount, lens, pentax, pentax 50-135 vs, pentax lens, sigma, slr lens, vs, vs sigma
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sigma 50-150 & DA* 50-135 Street Shootout jsherman999 Pentax SLR Lens Discussion 57 01-18-2015 09:32 PM
Sigma 50-150 & DA 50-135 - Which is more reliable? yusuf Pentax SLR Lens Discussion 6 03-28-2010 03:35 PM
Sigma 50-150 and Pentax 50-135 skid2964 Pentax SLR Lens Discussion 8 11-06-2009 08:26 AM
Pentax 50-135 vs Sigma 50-150 alehel Pentax SLR Lens Discussion 1 05-05-2009 07:40 AM

All times are GMT -7. The time now is 05:34 AM. | 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]