Nikkor-O 2.1cm f/4 S-mount

[richardHaw]

https://richardhaw.com/2025/10/10/repair-nikkor-o-2-1cm-f-4-s-mount/
very rare!

[Birna Rørslett]

I remember this lens fondly. It's true the much more "recent", (from approx. 2005), Voigländer Skopar 21mm f/4, is superior, but the ancient 2.1cm had its charm and helped me love the Nikon rangefinders back in the film days.

Long gone now, like my dog of that old time. He was a German Shepherd, excessively fond of water (free-dived to 5m!!), and very curious as to what I was doing at all times. Thus his snout intruded in a lot of my photos in those days

Nikon S3, 2.1cm f/4 Nikkor

[richardHaw]

shared

[golunvolo]

Birna, beautiful, emotional and strong image!

[Øivind Tøien]

Birna, beautiful, emotional and strong image!

And dog freediving to 5m, that is certainly something special!

[pluton]

I had a copy of the F mount version in the mid-1980's.  The relative absence of distortion was one of my favorite qualities of the lens.

[Birna Rørslett]

The dog's name was Lobo. My friends thought he should be called 'Loco' as he went mad just seeing a water body.  He made his first dive at the age of 4 months and very quickly discovered what not to do under water - the first dive ended with him emerging coughing and gasping for air. Never gave up though, and became better than me !!

I'm sure he considered himself being a seal with legs instead of fins. He could swim for hours and had a fascinating ability of using his tail as a rudder when he swam in tight circles -- wating for me to jump into the water and join him.

The image by the way was taken almost exactly 50 years ago today.

[Øivind Tøien]

Thanks for sharing the story! I would have loved to free-dive with Lobo the diving dog. Do you have any under water images of him in action diving?

[Birna Rørslett]

No, sorry -- only of my girl friend ...

[Birna Rørslett]

This is Lobo 1 year old and now really thinking he is born to be in the water. You literally had to drag him onto land.

[golunvolo]

Super cute.

 
 Lobo is a Spanish word for "wolf", interesting name choice.

[Øivind Tøien]

Super cute.

+1, thanks, Birna for posting.

[John Geerts]

I remember this lens fondly. It's true the much more "recent", (from approx. 2005), Voigländer Skopar 21mm f/4, is superior, but the ancient 2.1cm had its charm and helped me love the Nikon rangefinders back in the film days.

Long gone now, like my dog of that old time. He was a German Shepherd, excessively fond of water (free-dived to 5m!!), and very curious as to what I was doing at all times. Thus his snout intruded in a lot of my photos in those days

Nikon S3, 2.1cm f/4 Nikkor

Great story and image !

[Birna Rørslett]

One more of my dog, where he circles impatientely waiting for me to jump into the water with him ...

Taken with the Nikon S3 + 10.5cm Nikkor, seen below with the Voigtländer Skopar 21mm f/4 that replaced the old 2.1cm f/4 Nikkor some years ago.

[richardHaw]

i am looking for a junk skopar