Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
03-27-2011, 01:40 PM   #1
New Member

Join Date: Dec 2010
Location: Florida
Posts: 8
New Lens Problems?

Hi, I just ordered an 18-55 WR to use with my new (yes, new old stock) K200D and was wondering how I should check it over when it gets here for problems, such as decentering, FF/BF etc. Unless it's really obvious I don't think I'd be able to spot if glass if out of alignement, for example. Can anyone give me a few tips, please? Also, how has this particular lens fared as far as QC goes? Thanks!

03-27-2011, 02:16 PM   #2
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
Go out and take pictures with it.
03-27-2011, 04:41 PM   #3
Veteran Member
wlachan's Avatar

Join Date: Sep 2006
Location: Canada
Photos: Albums
Posts: 2,626
Unlike the 16-50/2.8, the kit zooms don't seem to suffer as much decentering. But one fast way to check is using live-view. I don't know about Pentax bodies, but my 40D allows me to manual focus at 10X on the LCD. I just check the focus of left & right at different focal lengths and see if they agree with each other. If not, it's optically misaligned.
03-28-2011, 04:42 AM   #4
Inactive Account

Join Date: Mar 2007
Location: Long Island, N.Y.
Photos: Gallery
Posts: 1,124
QuoteOriginally posted by Wheatfield Quote
Go out and take pictures with it.

I bought one for my wife's K200D a while ago. A fine lens - camera kit combo.

03-29-2011, 04:40 AM   #5
New Member

Join Date: Dec 2010
Location: Florida
Posts: 8
Original Poster
Thanks everyone!
03-29-2011, 05:14 PM   #6
Veteran Member
mysticcowboy's Avatar

Join Date: Apr 2009
Location: port townsend, wa
Photos: Albums
Posts: 968
Sure, take photos with it but be systematic. Shoot at different focal lengths. Examine your shots to see how well it focuses. Shoot at a test chart to see how well it autofocuses.
04-01-2011, 09:25 PM   #7

Join Date: Apr 2007
Location: Oklahoma USA
Posts: 1,502
It seems sometimes that less ambitious lens designs suffer less from quality control issues, but you should test it thoroughly by taking controlled pictures that include conditions under which you usually photograph. For example, if you favor landscapes, don't test your lens only by shooting a test target at 5ft. I tend to take pictures of distant traffic signs, and move the camera such that the sign appears in different parts of the image - center, each corner, etc. Recently I purchased a Pentax 55-300 in hopes of replacing both my Pentax 50-200 and 100-300F. The 55-300 was very disappointing and that showed up clearly and consistently in significant differences in performance across the frame, so I returned it.


  • 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!
camera, lens, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Problems with my Tokina SD 70-210mm 1:4-5.6 lens altair Pentax SLR Lens Discussion 2 02-04-2011 10:36 PM
Inputting focal length of a variable lens on my K-x. / Shake reduction problems? TexasLangGenius Pentax DSLR Discussion 7 11-26-2010 11:35 PM
would a manual lens experience front/back focus problems? blu3ness Troubleshooting and Beginner Help 8 11-04-2009 11:14 AM
pentax da* lens problems ranters Pentax SLR Lens Discussion 8 08-17-2009 10:00 AM
Lens problems... Please help me! codiac2600 Pentax SLR Lens Discussion 3 03-30-2007 12:58 PM

All times are GMT -7. The time now is 12:24 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]