Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-24-2012, 09:07 AM   #1
Forum Member




Join Date: Dec 2012
Location: Vermont
Photos: Gallery
Posts: 55
prospec lenses

I have a couple 'prospec' lenses that I'd like to try on my K10, but am hesitant to do it because upon inspection of the lens mount it looks like there is a 'pin' added that isn't on any of my other pentax lenses or other brands of lenses that I have........can anyone tell me if this 'pin' will mess up my camera in any way?? I am adding a picture of it..........

Attached Images
View Picture EXIF
PENTAX K10D  Photo 
12-24-2012, 09:18 AM   #2
Inactive Account




Join Date: Dec 2008
Location: North Carolina
Photos: Albums
Posts: 1,720
That is the Ricoh pin, it can get stuck in the AF screw drive on auto focus bodies and can make the lens nearly impossible to remove. There are some variations in the pin design though, not all will get stuck.

If it is fairly large diameter, rounded and doesn't stick out very far, it will usually be safe, I have an older zoom that has that style and it has never been a problem.

That one looks smaller than the safe one I have, so I wouldn't trust it. You can usually remove them fairly easily by disassembling the mount. You could also put a dab of superglue over it and hold it down until it dries.
12-24-2012, 09:30 AM   #3
Forum Member




Join Date: Dec 2012
Location: Vermont
Photos: Gallery
Posts: 55
Original Poster
QuoteOriginally posted by elliott Quote
That is the Ricoh pin, it can get stuck in the AF screw drive on auto focus bodies and can make the lens nearly impossible to remove. There are some variations in the pin design though, not all will get stuck.

If it is fairly large diameter, rounded and doesn't stick out very far, it will usually be safe, I have an older zoom that has that style and it has never been a problem.

That one looks smaller than the safe one I have, so I wouldn't trust it. You can usually remove them fairly easily by disassembling the mount. You could also put a dab of superglue over it and hold it down until it dries.
Thanks for that!! I don't think I'll try it, but I may try to remove the pin when I'm feeling 'mechanically inclined', LOL. I do have a set of jewelers screwdrivers so it shouldn't be that hard.....(famous last words).......
12-24-2012, 10:48 AM   #4
Loyal Site Supporter




Join Date: Jun 2009
Location: Tumbleweed, Arizona
Photos: Gallery | Albums
Posts: 5,048
QuoteOriginally posted by pasojoy Quote
Thanks for that!! I don't think I'll try it, but I may try to remove the pin when I'm feeling 'mechanically inclined', LOL. I do have a set of jewelers screwdrivers so it shouldn't be that hard.....(famous last words).......
Here is a set of illustrated instructions on its removal. See the recommendation on the screwdriver to use....


12-24-2012, 01:38 PM   #5
Forum Member




Join Date: Dec 2012
Location: Vermont
Photos: Gallery
Posts: 55
Original Poster
QuoteOriginally posted by interested_observer Quote
Here is a set of illustrated instructions on its removal. See the recommendation on the screwdriver to use....
AWESOME, thanks!!
12-24-2012, 02:59 PM   #6
Loyal Site Supporter
Bruce Clark's Avatar

Join Date: Mar 2010
Location: Brookfield, Victoria
Photos: Gallery | Albums
Posts: 3,764
QuoteOriginally posted by elliott Quote
That is the Ricoh pin, it can get stuck in the AF screw drive on auto focus bodies and can make the lens nearly impossible to remove. There are some variations in the pin design though, not all will get stuck.

If it is fairly large diameter, rounded and doesn't stick out very far, it will usually be safe, I have an older zoom that has that style and it has never been a problem.

That one looks smaller than the safe one I have, so I wouldn't trust it. You can usually remove them fairly easily by disassembling the mount. You could also put a dab of superglue over it and hold it down until it dries.

Good point there about the pin sizes. I have a number of Ricoh lenses from my XR-P film days and have never had any problem with them on the Pentax. I was never sure what all the fuss was about. On inspection all are the larger rounded type. Nothing at all like the one in the photo (just lucky I guess)
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!
camera, lenses, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Prospec MC Auto 28-200 f/3.8-5.6 Superzoom unixrevolution Sold Items 11 04-11-2013 05:57 AM
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
Prospec Flash question Matthew_K Flashes, Lighting, and Studio 3 01-20-2011 05:47 PM
Prospec 135mm f2.8 Multicoated Lens for Pentax PKA: Beware of Richo pin ultraviolet Pentax SLR Lens Discussion 0 10-09-2010 10:02 PM



All times are GMT -7. The time now is 07:11 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