Nikkor-Q 1:4 f= 25cm -Nippon Kogaku Japan

[Kathmandu]

This is a lens that had a Photo-Sonics high speed Video camera mount. Its been banged around a lot - I have converted this to M42 . The only thing lacking is a good tripod mount collar, but I'm looking.
The lens has a preset aperture f4-f32, and was sold commercially as "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 "-meant to mount via a reflex housing . They built an extension ring/ adapter also to mount it on the Nikon F mount reflex cameras.
Excellent source of information on the lens.
http://www.mir.com.my/rb/photography/companies/nikon/nikkoresources/RF-Nikkor/RF250mm/index.htm



I received it with a custom Photo-Sonics adapter.

I marked the mount to cut for adaptation.



Which I had cut along n the knurled part. There were screws holding the bottom half down.


I took the old screws out- (#4/ 40) there were 4 of them and drilled holes to match on a M42 reverse mount adapter. I screwed the adapter and the leftover Photosonic adapter piece onto the back of lens.



I added on a hollowed out 2X lens extender along with the smallest m42 Extension ring. The lens focuses between 3.5 mtrs to infinity.





I bought the lens on ebay for about $40 after doing a lot of research,a few months ago-and have finally managed to add this to my collection. The lens glass in the front has a few marks which should not effect images .

Now where are the birds?






Cheers

[Kathmandu]

I was able to attach a custom tripod collar today. Tripod collar came off an old Continental zoom lens.

[56 DIN]

super - how much ?

[Kathmandu]