Nikkor 5cm 1.4. To file or not to file?

[naruto]

Two more shots

@f/1.4

@f/2

 

[Sonnar Brian]

These images settle it.

I'm filing down the J-3 mount for close-focussing. I'm pretty sure to get 0.8m out of it. The helical is already missing the close-focus stop, and gets in that close. Now I just need to take off some of the mount so the RF wheel can follow it.

 

[ferider]

Working as spec'ed Ashwin. Nobody can complain about that bokeh, don't you think ?

And good to meet you. Cute portrait (of the little one that is 🙂 ).

Cheers,

Roland.

 

[naruto]

Working as spec'ed Ashwin. Nobody can complain about that bokeh, don't you think ?

And good to meet you. Cute portrait (of the little one that is 🙂 ).

Cheers,

Roland.

Thanks Roland. The lens is just perfect. Now I need another body to accomodate the Canon. 😛

The little one is my fav model every weekend. He goes completely still when the camera is pointed at him. 🙂

 

[Krosya]

I cant believe it - Roland, you sold your Nikkor 5cm 1.4? Why? And what do you have now for a 50mm lens?

 

[ferider]

I cant believe it - Roland, you sold your Nikkor 5cm 1.4? Why? And what do you have now for a 50mm lens?

I had two, Krosya. Kept the Tokyo version.

The other 50s I still have in M/LTM are Canon 50/1.4 and Summicron 50/2 v4. And that's it 🙂

Cheers,

Roland.

 

[Krosya]

So, I guess you didnt like Hexanon, huh? 😉

 

[ferider]

So, I guess you didnt like Hexanon, huh? 😉

I liked it. No real rationale about picking the cron over it, except finding a good deal on the cron.

Cheers,

Roland.

 

[Matus]

Waking the thread a bit.

I have only recently received a nice Jupiter 3 that I plan to sue with a R3A (once I get my hands on a nice grey one - not so easy).

I have only found in this thread that the J3 can also be made to focus closer - in the similar way than the Nikkor 50/1.4. However - even from the pictures posted it is not fully clear to me WHICH part (and how wide & deep) form the rim has to be filled away.

Could somebody post a picture of an adjusted J-3 - with an explanation how exactly should one proceed?

 

[ferider]

Doesn't work with a J3, Sorry.

 

[Matus]

But Brian seemed to have positive experience. Maybe he could comment ...

 

[Sonnar Brian]

You will have to join ziforums.com to see the attachments.

http://ziforums.com/showthread.php?t=281

Close-focus mod for the Jupiter-3. Gets in closer than the 1M minimum, like 0.85m or so.

Overall, I believe this mod is worthwhile. J-3's are inexpensive, fast, and decent Sonnar lenses. Getting it to focus "just a bit closer" adds to its qualities.

Wide-Open at F1.5, at its new close-focus of ~2.5ft.

Stopped down a little.

And mid-range.

Focus at infinity is also good.

 

[Matus]

Brian, thanks a lot. It seems to be quite easy - I will definitely give it a try (once I have SOME camera and will be sure that my lens works properly)

I will report on the results later.

 

[sanmich]

Are all Nikkor 1.4 ltm candidates for this mod, or only specific versions of it?
Are there better versions than others?

Thanks!

 

[ferider]

It will work on 50/2 and 50/1.4 copies which have a close focusing scale, Michael. Which most of them do. Also have a look at the original thread on the subject:

http://www.rangefinderforum.com/forums/showthread.php?t=56962

IMO, when you file, you should leave smooth corners for the RF roller when screwing the lens in.

Roland.

 

[sanmich]

Thanks Roland
I am starting to think about replacing my canon 1.4 by a modified nikkor 1.4.
The canon is a great lens, but I was recently disappointed by its level of distortion.
The Nikkor seems to be the "best of all worlds": LTM+ M AND close focusing.
I will have to compare it to the Canon before I let this gem go.

 

[alexnotalex]

Hi everybody, very interesting article. I have a f2 Tokyo I'm excited about.

Has anybody tried the filing trick with a CanonP body? (screw mount)
Looking at it myself I can't decide if it's a good plan or not...
many thanks,

 

[alexnotalex]

Hi everybody, very interesting article. I have a f2 Tokyo I'm excited about.

Has anybody tried the filing trick with a CanonP body? (screw mount)
Looking at it myself I can't decide if it's a good plan or not...
many thanks,

Guess I should have read the chain more carefully... but still unsure with the P...

Quote:
Originally Posted by Krosya
After playing with my newly adjusted to coupled close focus Nikkor 5cm/1.4 I had another pleasant surprise. I dont have any other LTM lens that focuses coupled down to .7m, so whenever I used Canon 7 I always assumed that this body only focuses down to 1m. Well, after putting the Nikkor on it (after modification) I was happy to find out that on Canon 7 it still focuses down to .7m COUPLED! So very cool. I'm so glad I took a chance and modified my Nikkor!
I've wondered about that myself- and I'm betting the Canon P and others do the same. As it is, one of mine follows the Nikkor 5cm f2 in to about 0.85m. It's wheel is a bit lower than the others.

I'm going to mod the J-3 for close focus, leave the nikkors though.