Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-24-2009, 05:40 AM   #1
Veteran Member
Spock's Avatar

Join Date: Aug 2009
Location: Perth, Western Australia
Photos: Albums
Posts: 419
focus problem FA28-105 3.2-4.5

I have a FA28-105 that I am happy with generally but a maddening problem is that it sometimes hunts and/or refuses to focus even in bright sunshine unlike other lenses I own. Why would this be? The focus sensor and focus motor are in the camera body (I have a K7). Can anyone shed any light on this annoying problem?


Last edited by Spock; 01-08-2011 at 08:50 PM.
11-24-2009, 05:50 AM   #2
Veteran Member
mickeyobe's Avatar

Join Date: Dec 2006
Location: Toronto, Ontario, Canada
Posts: 1,762
If you try to focus on a smooth, untextured, evenly lit surface any lens will hunt as would a person trying to focus manually.
Could that be your problem?

Zooming the lens to its longest focal length might help.

Mickey
11-24-2009, 06:46 AM   #3
Veteran Member
Spock's Avatar

Join Date: Aug 2009
Location: Perth, Western Australia
Photos: Albums
Posts: 419
Original Poster
QuoteOriginally posted by mickeyobe Quote
If you try to focus on a smooth, untextured, evenly lit surface any lens will hunt as would a person trying to focus manually.
Could that be your problem?

Zooming the lens to its longest focal length might help.

Mickey
Unfortunately that doesn't seem to be the problem. This lens is noticably harder to lock into focus than say my DA18-55 F4-5.6 or DA15 F4 - or even my F80-200 F4.7-5.6.

Trouble is it is an intermittent problem that strikes seemingly without rhyme or reason.
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!
fa28-105, focus, focus problem fa28-105, k-mount, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Focus problem, but only sometimes? StarDust Pentax SLR Lens Discussion 9 10-08-2010 04:36 PM
problem with focus? nowicjusz Pentax DSLR Discussion 2 03-30-2010 09:57 AM
K7 Focus problem sudupoosa Pentax DSLR Discussion 12 03-10-2010 11:53 AM
Got my new Pentax K-x, have a focus problem. Help! Scrub_AUT Troubleshooting and Beginner Help 2 02-16-2010 08:47 AM
A35-105/3.5 Vs. FA28-105/4-5.6 PZ Tim4Peace Pentax DSLR Discussion 4 12-05-2007 01:46 PM



All times are GMT -7. The time now is 08:20 PM. | See also: NikonForums.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