Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-11-2012, 06:52 PM   #1
New Member




Join Date: Jan 2012
Location: South Carolina
Posts: 4
Rokinon 135 f2.8 lens with Pentax Kx

Hello folks,

I am new to this forum. I am a recent entrant to the DSLR club and still taking baby steps. I bought a used lens off ebay, a Rokinon 135 mm f2.8 lens with a k-mount to be used with a Pentax Kx. I have been having trouble mounting it. However I play around with it, it just won't fit right. Any knowledge or pointers about this lens would be greatly appreciated.

Thank you for your time.

01-11-2012, 06:55 PM   #2
Pentaxian
ducdao's Avatar

Join Date: Dec 2009
Location: Montreal/Vermont
Posts: 2,160
QuoteOriginally posted by wildbaron1234 Quote
Hello folks,

I am new to this forum. I am a recent entrant to the DSLR club and still taking baby steps. I bought a used lens off ebay, a Rokinon 135 mm f2.8 lens with a k-mount to be used with a Pentax Kx. I have been having trouble mounting it. However I play around with it, it just won't fit right. Any knowledge or pointers about this lens would be greatly appreciated.

Thank you for your time.
Welcome to the forum. Can you post a picture showing a close up of the mount?
01-12-2012, 04:07 AM   #3
TZH
Senior Member
TZH's Avatar

Join Date: Aug 2010
Location: Kuala Lumpur
Photos: Gallery | Albums
Posts: 118
Ebay seller might failed to verify the mount , I see this all the time.
The best way is to upload a photo.
01-12-2012, 05:13 AM   #4
Pentaxian
JohnBee's Avatar

Join Date: Sep 2008
Location: front of computer
Posts: 4,496
QuoteOriginally posted by wildbaron1234 Quote
Hello folks,

I am new to this forum. I am a recent entrant to the DSLR club and still taking baby steps. I bought a used lens off ebay, a Rokinon 135 mm f2.8 lens with a k-mount to be used with a Pentax Kx. I have been having trouble mounting it. However I play around with it, it just won't fit right. Any knowledge or pointers about this lens would be greatly appreciated.

Thank you for your time.
I was under the impression that the Rokinon 135 came in Minolta mount?

01-12-2012, 06:16 AM   #5
Veteran Member
RioRico's Avatar

Join Date: Jun 2008
Location: Limbo, California
Posts: 11,264
QuoteOriginally posted by JohnBee Quote
I was under the impression that the Rokinon 135 came in Minolta mount?
Mine (serial # 141658) is in PK-M mount. The mount is not labeled. If Ricoh made Rokinon sold different versions, we'd indeed need to see a picture of the mount to tell just which it is.

EDIT: Correction in italics.

Last edited by RioRico; 01-12-2012 at 06:46 AM.
01-12-2012, 06:33 AM   #6
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,295
QuoteOriginally posted by RioRico Quote
Mine (serial # 141658) is in PK-M mount. The mount is not labeled. If Ricoh made different versions, we'd indeed need to see a picture of the mount to tell just which it is.
Rokinon, not Rikenon. Rokinon was a reseller, just like Vivitar. They sold lenses in FD, F, and MD mounts for sure, not sure about PK. The only one I've seen listed is a 500mm mirror. The newer Rokinons are just rebadged Samyangs.
01-12-2012, 06:44 AM   #7
Veteran Member
RioRico's Avatar

Join Date: Jun 2008
Location: Limbo, California
Posts: 11,264
QuoteOriginally posted by boriscleto Quote
Rokinon, not Rikenon. Rokinon was a reseller, just like Vivitar. They sold lenses in FD, F, and MD mounts for sure, not sure about PK. The only one I've seen listed is a 500mm mirror. The newer Rokinons are just rebadged Samyangs.
You're right, I mis-spoke (early morning confusion), and it's fixed. Yes, Rokinon (old days, like pre-AF) was the badge on lenses with Pentax mounts. My two Rokinons are 28/2.8 and 135/2.8, both PK-M mount.

PS: I hate the Rokinon name, just because it's so confusable with Rikenon. Seems like a cheap rip-off name, like photo gear labeled Pantex or Nokon or Cannon, or a Fendar guitar. [/me grumbles & whines]

Last edited by RioRico; 01-12-2012 at 06:51 AM.
01-12-2012, 06:57 AM   #8
New Member




Join Date: Jan 2012
Location: South Carolina
Posts: 4
Original Poster
[IMG]C:\Documents and Settings\n546137\My Documents\Downloads\photo.jpg[/IMG]

Thanks for the info folks. I bought it with the impression that it was an RK mount, which would fit a Kx. Anyway, here is a photo of the lens. I have marked the mount flanges. Please let me know what you guys think.

Thank you.

01-12-2012, 07:04 AM   #9
Forum Member




Join Date: Apr 2010
Location: Erie, PA
Photos: Gallery | Albums
Posts: 65
iF YOU ARE HAVING TROUBLE GETTING IT ON THOUGH...DO NOT FORCE IT!!
I had a small panic last weekend from an older Focal MC lens that had a Ricoh pin...well not really but it had a pin that once i did get it on...well a hacksaw got involved. If it does not fit do not force it. Big lesson learned for me.
01-12-2012, 07:21 AM   #10
Forum Member




Join Date: Sep 2011
Location: Grand Rapids Michigan
Posts: 96
QuoteOriginally posted by martyd14 Quote
iF YOU ARE HAVING TROUBLE GETTING IT ON THOUGH...DO NOT FORCE IT!!
I had a small panic last weekend from an older Focal MC lens that had a Ricoh pin...well not really but it had a pin that once i did get it on...well a hacksaw got involved. If it does not fit do not force it. Big lesson learned for me.
Hacksaw involved? We must see aftermath pictures!
01-12-2012, 07:43 AM   #11
Forum Member




Join Date: Apr 2010
Location: Erie, PA
Photos: Gallery | Albums
Posts: 65
Man i wish i had pics of it but after the 2 hours of trying to twist, disassemble and finally cut this lens in half and then having it finally just pop off with a yank in the right direction...well that lens got tossed quick. this thing was solid metal and was made like a tank. wish it would have fit! No harm to the K-x at least
01-12-2012, 07:44 AM   #12
Pentaxian
bluestringer's Avatar

Join Date: Nov 2011
Location: Cotton fields of South Georgia
Photos: Gallery | Albums
Posts: 2,399
The image is not showing. I have a Kalimar lens PK-R mount that would not fit because the flange that protects the aperture lever was too big. I removed the 2 small screws holding the flange and removed it. Works fine now. Don't know if that is your problem or not. If it is a PK mount, that would be something to look at. Also if it has the Ricoh pin, make sure to remove it before mounting.
01-12-2012, 08:16 AM   #13
New Member




Join Date: Jan 2012
Location: South Carolina
Posts: 4
Original Poster
I am hoping this works

Name:  photo.jpg
Views: 1383
Size:  129.6 KB
01-12-2012, 08:26 AM   #14
Pentaxian
ducdao's Avatar

Join Date: Dec 2009
Location: Montreal/Vermont
Posts: 2,160
QuoteOriginally posted by wildbaron1234 Quote
THis is definitely not a K-mount lens. Looks like Canon or something.

There seem to have two aperture levers, K-mount only has 1.
01-12-2012, 08:44 AM - 1 Like   #15
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,295
Not a Canon FD, it's an Olympus OM mount. Identifiable by the lens release and stop down buttons opposite each other.
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!
f2.8, f2.8 lens, k-mount, kx, lens, lens with pentax, pentax, pentax lens, rokinon, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Travel Lens: Pentax 18-135 vs. Tamron 18-250 darenka Pentax SLR Lens Discussion 15 09-28-2011 09:16 PM
SMC Pentax-F 135 1:2.8 Lens cleaning Lenny5896 Troubleshooting and Beginner Help 4 08-19-2011 02:34 PM
Rokinon SMC 35-135 mm Lens Vasyl Pentax SLR Lens Discussion 3 01-02-2011 04:10 PM
Question on Rokinon 500mm mirror lens Gerrys Troubleshooting and Beginner Help 5 10-17-2010 05:13 PM
ROKINON 85MM F1.4 LENS NEBULA_ONE Pentax SLR Lens Discussion 7 03-12-2010 10:51 AM



All times are GMT -7. The time now is 04:57 AM. | See also: NikonForums.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