Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
05-04-2021, 11:41 AM   #1
New Member

Join Date: Dec 2016
Posts: 3
F-mount (Nikon) to K-Mount (Pentax) and visa versa

I have both a Nikon D80 and a Pentax K-3. I'd like to swap lenses back and forth between these two cameras. Is there a K-Mount to F-Mount adaptor, and a F-Mount to K-Mount adapter that I can purchase?

05-04-2021, 01:23 PM   #2
Loyal Site Supporter
Loyal Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: North Syracuse, NY
Photos: Gallery
Posts: 15,769
Not any that is worth using. Optically corrected adapters are manual only and are short tele-converters.
05-04-2021, 01:49 PM   #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: 24,498
there is a way to do part of this:

swap the mount on the Pentax to an Adaptist mount...
05-04-2021, 04:07 PM   #4
swanlefitte's Avatar

Join Date: May 2015
Location: New Orleans
Photos: Gallery
Posts: 3,454
F mount will go on a kmount but not secure. You can use it but only good for trying. I did use a nikkor 100mm2.5 on my pentax for a few weeks until it fell off the camera and smashed.
The mounts are too close. There is no room for an adaptor to fit between them.

05-04-2021, 04:30 PM   #5

Join Date: Apr 2016
Location: Tirana
Posts: 497
The flange distance of the Nikon is a hair longer than the one of Pentax, just to get things messy you know. I have looked into this myself and nothing worthwhile is to be found. Unless you want to use optical adapters, but that's a whole different story.

  • 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!
f-mount, k-mount, nikon, pentax, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
With a teleconverter, why some lenses are better at PDAF than CDAF and vice versa? parinya-ekparinya Pentax SLR Lens Discussion 8 10-12-2019 02:55 PM
LR printing A4 onto A3 and vice versa! BruceBanner Digital Processing, Software, and Printing 2 02-20-2019 07:24 PM
Who is making Pentax K to Konica AR (or vice versa) lens to body marriages? goatsNdonkey Non-Pentax Cameras: Canon, Nikon, etc. 8 02-23-2016 11:57 AM
screwing the K and vice versa Stakumar Welcomes and Introductions 2 05-29-2012 12:41 PM
For Sale - Sold: Tamrac Adventure 9 (Red), Versa 7MDH Clone (Olive), Pentax small bag darrenleow Sold Items 7 03-05-2010 01:53 AM

All times are GMT -7. The time now is 10:23 PM. | 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]