Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
10-09-2013, 09:12 PM   #1
Site Supporter
K David's Avatar

Join Date: Oct 2012
Location: SF Bay Area
Photos: Gallery
Posts: 1,312
Nikon for Pentax 6X7?

Nikon Nikkor Q 4 25 cm Pentax 6x7 Bajonett | eBay

Is that a real lens or something someone cobbled together for macro work?

10-09-2013, 09:49 PM   #2
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,443
Google is our friend.

The lens at the auction closely resembles a reflex-adapted (sort of like a Visoflex) 250mm lens developed in the mid-1950s for the Nikon S-series rangefinder camera.

Nikon's RF Nikkor (Rangefinder bayonet S-mount) 1:4 f=25cm (250mm f/4.0) Telephoto lens- index Page

(Nippon Kogaku K.K./ Nikon RF Nikkor-Q 1:4.0 f=25cm MK II (250mm f/4.0) telephoto lens
for Nikon Bayonet S-Mount Rangefinder cameras...about 1/2 way down the page.)

The mount (if truly Pentax 6x7), was undoubtedly cobbled on and the registration distance may well be correct. The main question I would have is whether the coverage circle of the lens is adequate for the much larger 6x7 negative.


Last edited by stevebrot; 10-09-2013 at 09:54 PM.
10-09-2013, 09:49 PM   #3
Site Supporter
gofour3's Avatar

Join Date: Oct 2008
Location: Vancouver, Canada
Posts: 5,339
Looks like a "Frankenlens" to me!


  • 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, medium format, nikon, pentax
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
2x Converter for Pentax 6x7 Fritzenpapa Pentax Medium Format 7 11-15-2013 02:54 PM
For Sale - Sold: Pentax 6x7 400mm f4 SMC Takumar & 6x7 to K mount adapter littledrawe Sold Items 8 04-30-2012 04:58 PM
Pentax 6x7 SMC Takumar 600mm f4 for $2500 Clinton Pentax Price Watch 5 01-10-2012 05:32 AM
New Social Group - Pentax Heavy for 6X7 format MysteryOnion Travel, Events, and Groups 2 11-16-2011 04:06 AM
I'd like to adapt a Nikon lens TO the Pentax 6x7...possible?? Corran Pentax Medium Format 6 12-13-2010 11:13 AM

All times are GMT -7. The time now is 06:40 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]