Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-15-2008, 04:20 PM   #1
New Member
nils's Avatar

Join Date: Mar 2007
Location: Göteborg/Sweden
Posts: 12
Sticky focus behaviour with Vivitar 105mm macro?

Hi guys,

Has anyone experienced any weird focusing behaviour with their Vivitar series 105mm macro when focusing back from 1:1 to around 1:1.2? While focusing out my copy kind of "sticks" at that magnification, even though focusing in the other direction is just fine. (And with the lens of the camera.) I've got the same issue on both my k100d and my k20d and can't figure out why.

Hmm....

- N

03-16-2008, 06:23 PM   #2
Veteran Member
omega leader's Avatar

Join Date: Jan 2008
Location: Niagara Region, Ontario Canada
Photos: Gallery
Posts: 417
My copy is fine, testing it now and from 1:1 to 1:1.2 it is just as perfectly smooth as the rest of the range.
03-31-2008, 01:50 PM   #3
New Member




Join Date: Aug 2007
Location: Bountiful, Utah
Posts: 1
re: sticking vivitar 105mm

I had a similar problem with a lens I bought last November as new "old stock". The focusing ring worked normally, except when lens was fully extended, after which the focus ring stuck and would not return until I removed the lens from the camera. Because of how difficult they are to find, I did not want to return the lens. A local camera repair shop wanted minimum $100 just to open it. I got brave and removed the mount to get a look inside, where I discovered that the linkage from the mount to the diaphragm was misaligned and slipping behind the mechanism where it got stuck. A slight bend of the tang with needlenose pliers did the trick, and I have had no further problems.

note: opening a lens is not for the faint-of-heart!
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!
105mm, behaviour, k-mount, pentax lens, slr lens, vivitar
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Vivitar Series 1 105mm macro infinity focus problem mjkwee Pentax SLR Lens Discussion 1 05-12-2010 01:31 PM
For Sale - Sold: Vivitar Series 1 28-105mm f2.8-3.8 Zoom, KA mount, Manual Focus Just1MoreDave Sold Items 2 02-04-2010 04:21 PM
For Sale - Sold: Vivitar S1 105mm f2.5 1:1 Macro; Tamron SP 90mm f2.8 1:1 Macro; Pentax-F 1.7X thomasxie Sold Items 4 02-02-2010 05:40 AM
For Sale - Sold: Vivitar 100mm f/2.8 Macro 1:1 Manual Focus PKA OR Vivitar Series 1 Macro yyyzzz Sold Items 6 10-22-2009 05:18 AM
For Sale - Sold: Vivitar 100mm f/2.8 Macro 1:1 Manual Focus PKA Same optics as Vivitar Series jjdgti Sold Items 10 10-05-2009 05:19 AM



All times are GMT -7. The time now is 09:34 AM. | 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