Alpsman
Well-known
For some unknown reason, the viewfinder of my S2 is becoming increasingly blurry 
To remedy this unfortunate situation, I spent a few hours playing around on the computer (and messed up a number of prototypes) and designed a mount for the normal Nikon correction lenses.
The mount has an M19 x 0.75 mm thread, so all correction lenses for Nikon F, F2, FM, FE and of course every correction lens (Fuji, Zeiss) that has an M19x0.75mm thread fit.
Printed with PLA and a layer thickness of 0.1 mm or less so that the thread is nicely formed and 4 perimeters so that it is stable.
The "first time" screw the lens in carefully and straight so that the thread does not cut into the plastic.
Download here for free:
To remedy this unfortunate situation, I spent a few hours playing around on the computer (and messed up a number of prototypes) and designed a mount for the normal Nikon correction lenses.
The mount has an M19 x 0.75 mm thread, so all correction lenses for Nikon F, F2, FM, FE and of course every correction lens (Fuji, Zeiss) that has an M19x0.75mm thread fit.
Printed with PLA and a layer thickness of 0.1 mm or less so that the thread is nicely formed and 4 perimeters so that it is stable.
The "first time" screw the lens in carefully and straight so that the thread does not cut into the plastic.
Download here for free:
Nikon S2 Halterung für Augenkorrekturlinse, holder for eye piece correction by blechbude | Download free STL model | Printables.com
Nikon S2 Halterung für Augenkorrekturlinse, holder for eye piece correction | Download free 3D printable STL models
www.printables.com
Last edited:
Timmyjoe
Veteran
That's very clever and nicely done. And it is very generous of your to share this with all of us.
I too found the viewfinder on my Nikon S2 was getting blurry. Having the same problem on all my favorite old film cameras. Unlike the digital cameras I own, which have adjustable diopters, the old film cameras are fixed viewfinder, when your eyes age, tough luck.
Best,
-Tim
I too found the viewfinder on my Nikon S2 was getting blurry. Having the same problem on all my favorite old film cameras. Unlike the digital cameras I own, which have adjustable diopters, the old film cameras are fixed viewfinder, when your eyes age, tough luck.
Best,
-Tim
Alpsman
Well-known
In the meantime I even make the corrective lenses myself; see this thread.
www.rangefinderforum.com
Because you either can't find a suitable one or they cost a fortune.
Next I'll try to design and print such a ring. The problem is getting the fine thread to fit.
Eye correction lens replica for Nikon F, F2 and all other cameras with M 19 x 0.75 mm thread.
Since these eye correction lenses are a bit difficult to find, at least usually not in the right strength, and they often charge high prices for them, I decided to recreate them.The ring itself is a simple turned part. My thought was to use the lenses from those dirt cheap reading glasses. So I...
www.rangefinderforum.com
Next I'll try to design and print such a ring. The problem is getting the fine thread to fit.
Timmyjoe
Veteran
Yeah, I do the same thing. Having a lathe can really come in handy.
Best,
-Tim
Best,
-Tim
Trask
Established
Interesting! So the new eyepiece stands proud of the camera's eyepiece, i.e., not touching? How do the frame lines appear to you -- well visible, or requiring looking up/down/left/right? I expect to see your product(s) on Etsy soon!
Alpsman
Well-known
The first thing I did was, holding the correction lens to the camera by hand to see if it works.
Yep!
The framelines are as sharp as before, but the image in the viewfinder is also sharp and I can see the patch for focusing clearer than before.
I can only speak for my eyes. On my regular glasses I have on the right eye +3,5, but on the camera I need a + 0,5 to +1 correction lens.
Then I made a sample out of cardboard to get the correct form and measurements.
The rest was done in the software and on the printer.
And no, it was not a one-shot development.
On the S2 I need a + 0,5 correction lens as I do on the F/F2.
The correction lens does not touch the camera eyepiece, because the material is thick enough to touch the camera body before the correction lens touches the cameras eyepiece. I only have a + 0.5 and a +1 correction lens for testing. Maybe a thicker / stronger lens will need a greater distance.
As soon as my eyesight gets weaker I need also stronger lenses.
Then we'll see if I need to rework it.
Unfortunately I don't have a lens with M 21x0.75mm like on the F3HP, otherwise I would have made two versions.
The framelines are as sharp as before.
At least "I" can see the whole frameline without moving up/down/left/right
I dont sell it on etsy or somewhere else. I dont do "it" for money ;-)
I do it just for the sheer fun of creating things I don't find or get to buy for money.
Ya can download the holder and a few other things for free
blechbude | Printables.com
Erfinde stets, doch werde nie Erfinder, mit Arbeit verdien dein Brot, sonst darben deine Kinder. Schlosser, Grafiker . … – 3D models
www.printables.com
Trask
Established
Thanks, Alpsman. In fact, our local library has a printer that the public can access, so maybe I'll educate myself a bit more and see what I can create -- thank for the info on Printables.com
Alpsman
Well-known
There is an M19x0.75 ring available for download here.
www.thingiverse.com
In my slicer and on my printer I had to scale the ring to 102% so that it would fit.
Now all you need is the right glasses for a lens.
Fujifilm X-Pro1 19mm Diopter Holder by beekeg
A diopter holder to replace the original or missing diopter eyepiece for the Fujifilm X-Pro1. This may also fit some Nikon and Voigtlander cameras, but I have not tested it on anything but the X-Pro1. The M19 0.75mm thread is very fine so you should use a fine layer height. I printed it at...
www.thingiverse.com
Now all you need is the right glasses for a lens.