Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
01-27-2014, 10:19 AM   #1
Junior Member

Join Date: Dec 2013
Posts: 48
Can I safely use any of these old lenses on a K5?

Hi folks,

I am awaiting arrival of a K5 purchased from a forum member. Until I can save for a newer lense I wondered if these lenses, from my oldRicoh and Ricoh made for Sears slr s will suffice? I remember reading about a pin on olderRicoh? lenses that may jam on newer dslr's

These are the lenses I have:
Auto Sears mc 50 mm 1: 1.7 made in japan
Tamron AF LD 70-300. f 4-5.6. tele-macro.
Sears auto zoom mc. 70-200 f 4.0.
It also has a kr on it. I believe that just indicates the model camera it was packaged with.

I would appreciate your advice. Don't want to damage my new baby. Thank you in advance

01-27-2014, 10:33 AM   #2
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 43,226
If the lens says KR, you will first need to remove the "Ricoh Pin", otherwise the lens might get stuck on your camera. The other lenses should work fine without modification however.

Adam Webmaster (Site Usage Guide | Site Help | My Photography)'s high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

01-27-2014, 10:33 AM   #3
Veteran Member

Join Date: Oct 2008
Location: Frisco Texas
Photos: Gallery
Posts: 382
If they have the Ricoh pin remove it. It is very easy to do. Then you will be safe.
01-27-2014, 10:47 AM   #4
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,872
But if the 'Ricoh pin' is a rounded nub you don't have to worry about it.

It will be interesting to see what the Sears zoom is. I can find info about a 70-210 F/4 but not a 70-200 F/4.

Third party lenses with a 'Ricoh pin' are usually marked PK-A/R, so I don't think you have anything to worry about.

01-27-2014, 12:46 PM   #5
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,474
QuoteOriginally posted by boriscleto Quote
But if the 'Ricoh pin' is a rounded nub you don't have to worry about it.
This is a difficult matter. It used to be my practice to recommend total avoidance or surgery to avoid "Ricoh pin" peril. That is the safest route to be sure, though things get muddy when considering the benign version of the pin. Boris describe that version as a rounded nub. The examples I have seen have been a spring-loaded ball or rounded pin that extends a very small distance beyond the mount face and which easily rides over the edge of the AF drive well.

The dangerous version of the pin is an actual spring-loaded pin that extends a fair distance from the mount face. Both types are found on both Rikenon P and third-party lenses for the Ricoh P mount. The benign version (rounded nub or ball) can be safely used on Pentax AF cameras and should not be a cause for surgical intervention.

As always, I must add that XR Rikenon and Auto Rikenon and plain Rikenon are all safe and do not have the pin.

01-27-2014, 02:05 PM   #6
Junior Member

Join Date: Dec 2013
Posts: 48
Original Poster
I'll check the mounts when I get home from work.
BTW I think the sears zoom is a 70-210. Dont know why I said 70-200. ; - )


  • 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!
auto, camera, lenses, mc, pentax help, photography, sears
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can I use these lenses with a K-5 camera? evalon Pentax DSLR Discussion 5 09-09-2013 04:53 AM
Can I use these lenses fishnuts Troubleshooting and Beginner Help 4 04-27-2011 02:17 AM
Can I use old manual lenses on new K-m DSLR? falamslam Troubleshooting and Beginner Help 3 12-15-2009 04:22 PM
Can I safely use a Vivitar 285 jukaea Pentax Camera and Field Accessories 9 06-04-2009 09:18 AM
can I use any of my old Nikon gear w/ my new pentax system? 360fish Photographic Technique 18 08-17-2008 07:22 AM

All times are GMT -7. The time now is 02:23 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]