Can anyone help me with these strange Nikkor macro lenses

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Steve
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I was at a car boot sale a while back and saw what I first thought was the objective lens from a microscope in a box with a few other bits and pieces. Since this is not something you might expect to see not screwed into the end of a microscope I picked it up and realised straight away that it was, in fact, a Nikkor lens. The fact that it had MACRO Nikkor 35mm F4.5 engraved on it kind of gave the game away. It also featured a blue line around the body. In the same box were 2 other lenses. One is a MACRO Nikkor 12cm F6.3 with a red line around it and the third is a MACRO Nikkor 65mm F4.5 with a yellow line. All three have a screw thread rather than the Nikon F-mount. In the same box were a couple of bellows and assorted adapters to enable the lenses to be attached to a modern camera body with the usual F-mount. The chap wanted £15 for the lot which I thought was either a bargain or, at least, reflected their worth. I mean, for 15 quid you can hardly go wrong.

Does anyone have any idea what these lenses were for. I'm guessing something pretty specialised.

Thanks in advance for any help

Steve
 
from a quick google they seem to be microscope lenses
 
from a quick google they seem to be microscope lenses
Thanks for the reply.
That was my first reaction especially with the smaller of the three, the one with the blue line around it because it was exactly the same size as the objectives you would expect on a microscope. But microscope lenses don't, in my experience, have aperture control. The other 2 lenses are considerably larger and nothing like you would find on a microscope. And then there's the writing Nikkor Macro. I know that Nikkor have a different definition of Macro than other manufacturers. My 105mm for instance is called a "Micro" but equates to what others would call a Macro lens. Which is another reason for me thinking these lenses are a bit strange. I have the impression they are all related in some way - screw thread, coloured line around their body and they were all for sale in the same box as if they came as a package. The chap selling had no idea what they were.

Steve
 
I don't know if it is relevant but I have a set of Nikon supplementary lenses for a 200mm Medical Nikkor and these have engraved colour lines. Red x1/8, Yellow x1/4 blue x1 representing the magnification when used with the primary lens.

In fact they follow the resistor colour code sequence, Red x1/4, Orange x1/6, Yellow x1/4 Green x1/2, Blue x1, Violet x2

Maybe the lines on yours represent the nominal reproduction ratio also.
 
Thanks for all the replies which were very helpful. I now have them identified, the link from OldCarlos shows them perfectly. They do seem well regarded. When I have time I'll have a play with them and maybe post some images.

Cheers,

Steve
 
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