Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
11-18-2007, 10:17 PM   #1
Forum Member

Join Date: Aug 2007
Location: San Jose, Ca.
Posts: 78
Tamron 18-250 fans

I could use a little input from all you 18-250 users out there. I was so impressed with this lens in long, short and macro mode that I decided to see if it would hold up with a T.C. attached. Long story short, it's performance was better than anticipated and it was even able to auto-focus at full entension and F/6.3 in decent light. I tried both a Tamron 1.4 and a Kenko 1.5 (look to be the same unit) auto focus converter and except for the longer reach, both performed as though the lens were attached directly to the camera....until the lighting got low. Once there was insufficient light for the A.F. to work, I tried switching to M.F. but the lens wouldn't disengage. This was the same for both units. I tried both T.Cs with an FA 50 1.4 and a DA 50-135 and both worked as they should allowing the lens to manualy focus.
Has anyone else tried this lens with a T.C. and if so what were your results and were you able to manualy focus? I have more expensive and faster glass, but at the end of the day, this lens impresses me more than most others in it's ability to handle just about everything well. The only place I find it lacking even a little is in speed.


  • 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!
focus, k-mount, lens, light, pentax lens, slr lens, tamron
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sigma 18-250 or Pentax/Tamron 18-250? mjbens01 Pentax SLR Lens Discussion 3 07-08-2010 09:10 PM
Pentax 18-250 always same as Tamron 18-250? kitkat Pentax SLR Lens Discussion 12 07-08-2010 08:30 AM
Why DA18-250 is double the price of Tamron 18-250? raider Pentax SLR Lens Discussion 6 12-13-2008 05:40 AM
Tamron 18-250 vs Sigma/Tamron 70-300 ? simonkit Pentax SLR Lens Discussion 8 09-04-2007 07:12 PM
Tamron 18-250 vs Tamron 28 - 300 Atlantafine Pentax SLR Lens Discussion 3 04-26-2007 07:50 PM

All times are GMT -7. The time now is 10:29 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]