Yoshizen's Blog

NZ Lens

NZ(1)-A09A7693

Before, I’ve made close-up lens out of a front element of the zoom lens.  So, I wanted to make something different from this Nikon zoom lens. (AF-S Nikkor 18~200 G ED)  Conveniently, the front element of this zoom lens extend  = it’s mean I don’t need to look for a focusing helicoid to use with this lens. (It’s already there.)  😀

NZ(2)- lens

The matter of conversion was, to mount the separated front lens unit to a camera body.  There was a possibility to make the lens for Nikon mount. —– but on the end, I found that, unless I could trim off yet another 2.5mm from the lens barrel, it was only useable on Sony E mount.  The photo above was showing how the glue-up connection was made. (Aluminium ring was glued to the lens barrel first, then it was stick to the body mount.) (First plan was to mount the lens unit to a lens reverse adapter for Nikon though, as it couldn’t get an infinity focus, plan was changed to Sony = an adapter to use EOS lens to E-mount was chosen for its matching diameter.)

NZ(3)-lens-002

So far this lens is the heaviest among my homemade lenses.  Looks a bit strange though, it would give an impression of some kind of professional gear, not a homemade mock-up.  😀

NZ(4)-lens-5

Photo above are the test shots of this NZ (NZ for Nikon-Zoom) lens.  It looks the most murky, fuzziest image out of my many homemade lenses.  It was not a kind of light scattered halation — much more fundamental = light is not focused to single point (worse than spherical aberration and the image field was curved) —– Mind you, against its focal length (about 90mm) the diameter of this lens was 60mm =  it’s mean, 90mm lens brighter than F1.5. — Well, unless it was a few thousand pounds lens, no designer would give any guaranty of the decent quality for such bright lens.—– If I could produce decent sharp image out of this lens, it is a fraud. 

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3 Responses

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  1. SZ Lens (for Nikon) | Yoshizen's Blog said, on January 2, 2018 at 13:37

    […] I failed to make the NZ lens for Nikon use, I tried it again with similar Sony lens (18~200 F3.5~6.3, A-mount lens which has been dropped […]

  2. […] photos in here were taken by the lens called (or, I named) NZ lens.  It was a Nikon Zoom lens which I utilized its front element, and made it as an individual lens. […]

  3. NZ – B – lens | Yoshizen's Blog said, on August 1, 2019 at 01:00

    […] wrote about NZ lens more than a year ago. Since then I haven’t go out with that lens often. Big bright lens is […]


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