Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-17-2018, 10:14 AM   #16
Site Supporter
Site Supporter




Join Date: Nov 2012
Location: North Wales
Photos: Gallery | Albums
Posts: 2,537
Refer to my pic above you can see enough of the iris to get the orientation of the blades.

I think the studs on the blades should protrude both sides (check them, if any are broken/absent you're in trouble), they engage in the slots and in the holes in the loose housing. Re-lay the blades in the end of the lens body (your last pic) the housing goes on top (the face I can see of mine is black, but it looks like a symmetrical piece) then screw in the retaining ring, tightening with your lens spanner (two slots).
BTW the ball bearing is in line with the centre red line of the depth of field markings. It's easy for this to flop out of position then when you screw it all back together it jams.

11-17-2018, 10:40 AM   #17
Site Supporter
Site Supporter




Join Date: Nov 2017
Photos: Gallery | Albums
Posts: 583
Original Poster
QuoteOriginally posted by marcusBMG Quote
Refer to my pic above you can see enough of the iris to get the orientation of the blades.

I think the studs on the blades should protrude both sides (check them, if any are broken/absent you're in trouble), they engage in the slots and in the holes in the loose housing. Re-lay the blades in the end of the lens body (your last pic) the housing goes on top (the face I can see of mine is black, but it looks like a symmetrical piece) then screw in the retaining ring, tightening with your lens spanner (two slots).
BTW the ball bearing is in line with the centre red line of the depth of field markings. It's easy for this to flop out of position then when you screw it all back together it jams.
I don't think there WAS a ball bearing in there when I opened it. Perhaps that is the reason it jammed. Maybe I'll forgo the blades and just use it open.

---------- Post added 11-17-18 at 10:54 AM ----------

QuoteOriginally posted by jawats Quote
I don't think there WAS a ball bearing in there when I opened it. Perhaps that is the reason it jammed. Maybe I'll forgo the blades and just use it open.
Strike that. I found a tiny screw with a plastic collar. I think that's it.
11-17-2018, 11:33 AM   #18
Site Supporter
Site Supporter




Join Date: Nov 2012
Location: North Wales
Photos: Gallery | Albums
Posts: 2,537
The ball bearing sits atop a wee hole with a wee spring in it. if the ball bearing is missing then the spring can catch in the click detents in the ring with the f numbers on.
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!
450mm, astranar, auto, ball, camera, ebay, f6.3, f8, lens, lenses, mount, pentax, pentax service, repair, review, service, soligor, soligor / tamron, t-mount, tamron, tamron 450mm f8, tele, telephoto, vivitar, warranty
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: 3rd Pty M42, 50mm F1.8, 58mm F2.0, 135mm F2.8, 200mm, M42-K/Nikon MightyMike Sold Items 65 12-23-2018 07:16 AM
Pentax 150-450mm tripod mount keeps working loose stemked Pentax SLR Lens Discussion 10 09-05-2018 08:39 AM
For Sale - Sold: Pentax Screw mount lenses. Tak's Soligor, Tamron, Mamiya benjamin59 Sold Items 30 02-07-2009 12:56 PM
For Sale - Sold: Tele-Lentar 450mm/F6.5 K-Mount maxwell1295 Sold Items 5 09-02-2008 07:50 PM



All times are GMT -7. The time now is 11:03 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