Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-06-2019, 09:01 AM   #1
New Member




Join Date: Nov 2019
Location: Red Bank, NJ
Posts: 5
Sears 2.8 135mm lens N0 860606352

I have this lens from the old 35mm days. Is it possible to use this on my K3ii? I know it won't mount directly..and by that it will go onto the body but will not lock into place. I tried it on my K20..not my K3ii.
Any suggestions?

12-06-2019, 09:24 AM   #2
Moderator
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 9,630
The shield/flange for the aperture control lever may be too large and is hitting the power zoom contacts in the mirror box. If that is the case remove the flange when possible otherwise you have to cut/grind down the flange. Compare to other K-mount lenses that fit.
12-06-2019, 09:26 AM   #3
amateur dirt farmer
Loyal Site Supporter
pepperberry farm's Avatar

Join Date: Dec 2014
Location: probably out in a field somewhere...
Photos: Gallery | Albums
Posts: 35,809
depends upon which Sears 135/2.8 - I had a Sears 135/2.8 Macro that was manufactured by Samyang and it fit/worked perfectly on my K-50 and K-3....
12-06-2019, 11:55 AM   #4
Pentaxian
.a.t.'s Avatar

Join Date: Mar 2011
Location: yesterday
Photos: Gallery
Posts: 1,230
QuoteOriginally posted by John Tyler Quote
. . . Any suggestions?

Welcome, John. In addition to your mounting issue, there may possibly be an un-mounting issue as well.

Do you know about the "Ricoh pin"? If your 135 has "KR" on its aperture ring, your lens might have a Ricoh pin which can get the lens stuck on Pentax autofocus bodies.

Before you try to mount your lens again, I suggest you read this blog entry:
theatre of noise: Ricoh Lenses On Pentax Cameras -- The Ricoh Pin Fix

12-06-2019, 12:02 PM   #5
Moderator
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 9,630
Photos of the mount on the lens would be very helpful
12-07-2019, 12:57 PM   #6
New Member




Join Date: Nov 2019
Location: Red Bank, NJ
Posts: 5
Original Poster
I have attached some photos..the mounting does look a lot different then from my other lenses?? I hope this is the correct lens to use on my Pentax..I gave away the other one I had!!!
Attached Images
     
12-07-2019, 01:13 PM   #7
Loyal Site Supporter
Loyal Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: North Syracuse, NY
Photos: Gallery
Posts: 16,223
QuoteOriginally posted by John Tyler Quote
I have attached some photos..the mounting does look a lot different then from my other lenses?? I hope this is the correct lens to use on my Pentax..I gave away the other one I had!!!
It's a PKA/R lens. It has both the Pentax A pin and the Ricoh P pin.

There is no aperture shield, is one to the bayonet flags bent? Or the aperture flag?

The Ricoh pin looks like a dangerous one too.

12-07-2019, 01:39 PM   #8
Moderator
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 9,630
I've never seen an aperture control lever like that before. There are dozens of ball bearings around it. I'd hesitate to remove the mount for that reason. You'd have to remove the mount to disable the "Ricoh" pin.

Edit: The lever looks awfully big in terms of thickness and width compared to the levers on all my lenses. I suspect that is the problem.

Last edited by Not a Number; 12-07-2019 at 01:45 PM.
12-07-2019, 04:44 PM   #9
Site Supporter
Site Supporter
Just1MoreDave's Avatar

Join Date: Feb 2007
Location: Aurora, CO
Photos: Gallery | Albums
Posts: 6,160
The ball bearings are probably not an issue. It looks like there is a chance they will explode once you take the mount off. The bearings have stayed in place on lenses I have taken apart with that ring of bearings.
So I'd take off the mount and disable the Ricoh pin. I don't know what else would keep the lens from locking.
12-07-2019, 11:00 PM   #10
Moderator
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 9,630
QuoteOriginally posted by Just1MoreDave Quote
So I'd take off the mount and disable the Ricoh pin. I don't know what else would keep the lens from locking
It's a moot point since the lens won't mount and lock on the DSLR in the first place.
12-08-2019, 12:21 AM   #11
New Member




Join Date: Nov 2019
Location: Red Bank, NJ
Posts: 5
Original Poster
I'm not going to use it an risk messing up my K3ii...that is why I tried it on my old non functioning K20 first. Thanks everyone!!!
12-08-2019, 09:21 AM   #12
Moderator
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 9,630
You could probably use it with a KA teleconverter - contacts but no AF drive and power zoom contacts. I'm pretty sure the oversized lever is the problem.
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!
135mm lens n0, k-mount, k3ii, lens, mounts on pentax, pentax lens, sears 2.8 135mm, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Sears Film Camera Set w/ Sears 50 1.7, 135 2.8 lens, and accessories (Free Ship) W.j.christy Sold Items 2 08-30-2016 02:15 PM
For Sale - Sold: Pentax A 28mm f2.8 ; Inexpensive Sears KSX & Prospec 28-70 & Sears 50mm f2 & Filters stillnk Sold Items 4 11-15-2012 03:43 PM
Auto Sears f/1.7 vs... Auto Sears f/1.7? Sagitta Pentax SLR Lens Discussion 12 04-11-2012 06:20 PM
For Sale - Sold: Manual Sears 135mm f2.8, Sears 80 - 200mm f4.0 Macro, Takumar Asahi 28-8 (Worl vytas Sold Items 5 10-08-2010 04:13 AM
For Sale - Sold: Pentax 28-80mm, 35-135mm and sears 135mm YJD Sold Items 5 07-15-2009 01:42 PM



All times are GMT -7. The time now is 11:22 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