Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-25-2015, 05:05 AM   #1
New Member




Join Date: Jan 2013
Posts: 14
New Miranda 24mm Manual Lens Won't Mount K-01

I've just received a great copy (like new!) of a Miranda 24mm 1:2.8 MC Macro lens. However it doesn't seem to want to mount easily and I don't want to use brute force after reading the "Ricoh pin" scare stories. I can get it on the mount but it won't click into the "lock position".

From what I can tell, it doesn't appear to have the Ricoh pin, but maybe I'm looking for the wrong thing.

According to the user reviews for this lens, a few mention the pin issue, but others not: Miranda 24mm F2.8 MC Macro Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database

Anyhow, here are a few photos (attached) of the mount section of the lens for hopefully some trained eyes/experienced pentaxians to help me get taking some photos with this beauty!

06-25-2015, 05:15 AM - 1 Like   #2
Pentaxian
Rimfiredude's Avatar

Join Date: Oct 2014
Location: Washington
Photos: Gallery
Posts: 2,177
No photos of the mount attached.
06-25-2015, 05:18 AM   #3
New Member




Join Date: Jan 2013
Posts: 14
Original Poster
On closer inspection the only "pin"-like parts on the rim of the mount are the little gold spring loaded contact points. There is one located in a position where the usual pentax lens does not have one.

However, this one like the others is spring loaded and therefore shouldn't pose a problem as I imagine it would just depress to allow the lens to mount in the usual way ?
06-25-2015, 05:39 AM - 1 Like   #4
Pentaxian
dcshooter's Avatar

Join Date: Jan 2011
Location: Washington DC
Photos: Gallery | Albums
Posts: 4,600
The problem with the Ricoh pin is it can spring up into the AF drive socket, and you will have no easy way of turning the lens after that, short of using a shim to push it back up.

Here's a thread with pics that desccribes the issue and will help identify if you have a Ricoh pin on your lens:

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/293991-infamous-ricoh-pin.html

06-25-2015, 05:43 AM   #5
New Member




Join Date: Jan 2013
Posts: 14
Original Poster
Ok after more reading around, looks like it is definitely the "Ricoh pin" issue.

Here is a link to the mount photo: https://www.dropbox.com/s/jycwgbl63of2gg1/DSC_0291.JPG?dl=0

The pin seems like it is around 10 o clock just above the screw head on the left hand side.
06-25-2015, 05:59 AM   #6
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,863
The aperture guard looks like it is in a position that could hit the SDM contacts.

If you remove the 3 small JIS screws on the black ring you might be able to remove it.
06-25-2015, 06:01 AM   #7
New Member




Join Date: Jan 2013
Posts: 14
Original Poster
Ok I've solved the problem. Removed the bayonet mount from the lens (4 screws). then flipped it over and prized the metal arm (holding the pin in place) very slightly so the pin dropped to a flush level. Didn't have to remove the pin entirely in this case and the lens now mounts fine.

I found this video very useful:

Thanks for your help!

---------- Post added 06-25-15 at 02:06 PM ----------

On first inspection this Miranda 24mm lens seems great by the way.

It has the "A" setting if you want to have auto aperture which is working great with the K-01 and slightly wider field of view plus macro feature is nice too.
06-25-2015, 07:41 AM - 1 Like   #8
Senior Member




Join Date: Nov 2012
Location: Banffshire, Scotland
Photos: Gallery | Albums
Posts: 175
Here's a quick view of mine with the pin removed




Last edited by damianc; 06-25-2015 at 07:41 AM. Reason: syntax
06-25-2015, 08:07 AM   #9
New Member




Join Date: Jan 2013
Posts: 14
Original Poster
QuoteOriginally posted by damianc Quote
Here's a quick view of mine with the pin removed
Thanks damianc. Is that the same miranda 24mm lens because the mount looks identical ? If so how do you find it ?
06-25-2015, 08:32 AM   #10
Senior Member




Join Date: Nov 2012
Location: Banffshire, Scotland
Photos: Gallery | Albums
Posts: 175
It is the same Miranda 24mm! It used to be my favourite lens with film, but I've not used it so much with digital. I suspect my copy may not be quite as sharp as I'd like it, so consequently it hasn't had much use. I should really get out and use it again and see if I get that same buzz back!
06-25-2015, 08:47 AM   #11
New Member




Join Date: Jan 2013
Posts: 14
Original Poster
Nice! Mine seems quite sharp when I hit the perfect focus which can be tricky especially on macro subjects (eg. flowers) when the wind is blowing!

I'd definitely give it another go you may find it's ok, i'll try and upload some test shots when I get the chance to compare with yours for sharpness.
06-25-2015, 09:05 AM   #12
Senior Member




Join Date: Nov 2012
Location: Banffshire, Scotland
Photos: Gallery | Albums
Posts: 175
We'll need to pick a similar subject!

actually I have never tried it on my K-3, maybe that's something to do this weekend!
06-25-2015, 01:39 PM   #13
Forum Member




Join Date: Apr 2013
Photos: Gallery
Posts: 83
Mine is fine. Has the pin, never caused a problem. Use it on the K-01. Lens is marked with a pka in front of the serial number. The standard ricoh pin is much bigger. It is a great lens. Compared it to the 20 Limited. For street I find it better. It misses the pixie dust of the limited.
06-25-2015, 01:51 PM   #14
Forum Member




Join Date: Apr 2011
Location: Drome, France
Posts: 95
QuoteOriginally posted by UlrichSchiegg Quote
Mine is fine. Has the pin, never caused a problem.
Same for me, in fact it is a bit difficult to screw the lens on K-7 and K-3 (there is some friction) but on K100D the problem does not occur.
Mine is labelled PK-A too.
06-25-2015, 04:10 PM   #15
New Member




Join Date: Jan 2013
Posts: 14
Original Poster
@UlrichSchiegg

I'm wondering if there are a few versions... mine is PK-A/R960XXXXX

Maybe the 'R' signifies Ricoh version or is yours the same (ie. "R" followed by 8 digit number ?
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!
24mm, 24mm manual lens, camera, lens, macro, mc, miranda, miranda 24mm, mount, pentax help, photography, photos, pin, ricoh pin miranda k-01, troubleshooting
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
K-Mount (??) won't fit.. Topsy Troubleshooting and Beginner Help 12 11-08-2014 03:09 PM
Old K mount lens won't fit on my k-r body Timelime Troubleshooting and Beginner Help 10 02-10-2013 01:02 PM
New K-01 won't recognize my 50mm 1.4 M? Metalwizards Pentax K-01 2 11-27-2012 03:48 AM
New Sigma 150mm macro might/will/won't??? come in K-mount robjmitchell Pentax News and Rumors 145 02-18-2012 07:55 AM
Manual lens stuck on K-X, won't come off bklonoski Pentax DSLR Discussion 4 09-07-2011 11:35 PM



All times are GMT -7. The time now is 05:47 PM. | 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