Nikkor-H.C 1:2 f=5cm nippon kogaku tokyo lens

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Red Robin

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A quick inspection of my new-to-me nikkor revealed some kind of spots on the inside rear glass. Looking thru the front glass, past the aperture blades there seems to be sm.spots or perhaps moisture. (oil?) Now, on the back of this LTM lens is a black ring with two slots. Will unscrewing this ring allow me to remove the rear two elements for cleaning? Is it that simple? any tricks? OR. .. ... is it : no, no , not that way! I do have the correct tool to remove the ring.
 
Not much in the way of response. Is this a crummy lens even in good condition? The lack of anyone with experience in repairing one seems to imply that I must have purchased another dog. Drat
 
I've got one just like it. A wonderful lens that makes lovely images. Mine had something growing inside so I sent it to Focal point where it is getting cleaned and polished. Not cheap but I like the lens very much. My only complaint is it's heavy on my IIIc. Make sure it's not got a fungus growing in it. Good Luck. Joe
 
This should be a great lens. The 5cm Nikkors are fantastic performers. The spots may not be able to be cleaned as they may be bubbles in the glass which were common in old lenses before vacuum glass forming.
Like Beemermark said, just take some photos with it and be happy! You can usually subject lenses to SEVERE trauma, including cracking front elements and lots of dirt without any noticeable effect on image quality. So lens cleanliness is usually only for your own peace of mind, not for improving the image. Sometimes cleaning can do damage to lenses as well.
Don't get the lens off calibration either by loosening the optics out of the mount. If you don't have a way to ensure the optics are exactly collimated then you WILL have a dog.
Do the lens justice and shoot it before any cleaning to give it a chance to speak for itself.

Phil Forrest
 
Several years ago I did a comparison project of over twenty 50mm RF lenses. The Nikkor did "the best" accoriding to the feedback at RFF. I sold the Nikkor; regretted it; then bought another Nikkor. Such a lens should be a keeper.
 
Red Robin said:
Not much in the way of response. Is this a crummy lens even in good condition? The lack of anyone with experience in repairing one seems to imply that I must have purchased another dog. Drat
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That lens is far from being a dog.
Can you show a photo of the issues you are seeing?
If it's just tiny bubbles in the glass you will not see much resulting reduction in IQ.
If it is oil or haze, that condition is often very easy to clean. Some haze can be stubborn but, not usually.
I also use nikkor LTM's > I only own the 1.4/50 but, used to have a lovely NK Tokyo 50mm. It was a sweet performer. Lovely sonar rendering.
Don't give up so easy.
 
A photo would be best to see what is exactly wrong i'd think...?

here's a photo of the bubbles in my Zeiss Sonnar 5cm f1.5 (1938) as noted, the bubbles don't take away from IQ, just the process of forming the glass. I included a photo to demonstrate what the bubbles look like, you can even see one of them shimmer!


Zeiss Bubbles by lamlux.net, on Flickr



I've owned 2 Nikkor LTM's, the 50mm f1.4 and the 50mm f2 uncoated, both were fantastic performers with that great Sonnar look.
 
RObert Budding said:
Nikkor lenses are inferior to Leica lenses in every way imaginable (what are you doing, trying to drive up prices?).
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Beyond the crude stupidity of this last post, could this thread, which doesn't discuss about Nikon rangefinder stuff, be moved into the Leica LTM copies forum ?

Thanks... :rolleyes:
 
I just got a Nikon S2 and a 35mm f2.5 lens, I hope I like the results, I'm am (was)
a Leica guy, but trying a Nikon, I really like the way they handle and the viewfinder is
Huge! 1:1 nicer than the Contax IIa i had.

Range
 
I think it was said as a bit of tongue-in-cheek wit on the fact that Nikon lenses are excellent. That's how I read it. Sarcasm. Kind of like saying "the Leica 90mm AA lens is garbage, why would anyone want one of those?" when meaning the opposite. It's praise.

Of course, the poster could actually think that Nikkors are inferior, we'll just have to see if he contributes to the thread more.

Phil Forrest
 
The giveaway was the parenthetical "what are you doing, trying to drive up prices?", but apparently some people need everything spelled out for them.

Phil_F_NM said:
I think it was said as a bit of tongue-in-cheek wit on the fact that Nikon lenses are excellent. That's how I read it. Sarcasm. Kind of like saying "the Leica 90mm AA lens is garbage, why would anyone want one of those?" when meaning the opposite. It's praise.

Of course, the poster could actually think that Nikkors are inferior, we'll just have to see if he contributes to the thread more.

Phil Forrest
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