Mysterious 2 strange Nikon medical macro lenses
Photo: Copyright (c) 2006, Mike H. Symons, Canada, All Rights Reserved.

Information Wanted

Yes, I need your help. INFORMATION WANTED!!
My Nikon friend, Mike Symons, a vintage Nippon Kogaku specialist, want to identify these unusual Nikon Macro lenses. These lenses were manufactured in Japan by Nikon. However, I don't have information about these lenses. Please contact Mike or me kindly if you have information. Thank you.

RED BOOK NIKKOR
Michio Akiyama

I Need Your Help

Hi Nikon friends, my name is Mike Symons.
I found this unique outfit on e-bay a couple of months ago. It originated from San Capistrano, California, USA. I was told that it came from an Ophthalmologist's lab or office.
The Nikon F-2, serial #8050696, is fairly late and came equipped with an MD-2 Motor-Drive, serial #457328. Unfortunately it didn't come with the MB-1 or 2 battery pack. I'm led to believe that it was probably attached to a unit that contained its own power source, and thus didn't require the Nikon MB-1 or MB-2 battery pack.

The finder is an F-2 "Special Finder", Model II, and it has been suggested that these special finders were perhaps not made by Nikon although they have a few Nikon parts ...... such as the nameplate and mounting collar. There is an eyepiece diopter adjustment.
The focusing screen is clear (refer to JPEG image) and has a vertical and horizontal cross grids. It appears to be a type "M" .... although a bit different in appearance. The screen itself is mounted in a "K" frame but this is incorrectly marked.

Mysterious 2 strange Nikon medical macro lenses

Nikon F2 body with Nikon MD-2 motor drive outfit

Lens Spec.

The most exciting part of this outfit were the 2 Nikon Macro lenses, described individually below.

5x Nikon Macro lens, serial #26048

5x Nikon Macro lens

Direct Nikon F mount
Fixed focus lens
Aperture :  f2.6-16 with click-stops between aperture indents
What appears to be a 9-bladed iris diaphragm
Weight :  525 g
Overall length :  88.10 mm
Width at aperture ring :  57.40 mm
Width at front element :  28.40 mm

10x Nikon Macro lens, serial #26126

10x Nikon Macro lens

Direct Nikon F mount
Fixed focus lens
Aperture :  f1.4-f8.0 with click-stops between aperture indents
What appears to be a 9-bladed iris diaphragm
Weight :  755 g (appears extremely heavy for its size!)
Overall length :  123 mm
Width at aperture ring :  57.40 mm
Width at front element :  24.40 mm

Mysterious 2 strange Nikon medical macro lenses

Mysterious 2 strange Nikon medical macro lenses

A focusing screen with crosshairs for measurement

A special prism finder

Now I need help in trying to identify these unusual Nikon Macro lenses......
Cheers,

All photos by Mike Symons

Fine collection of Mike Symons
Photo: Copyright (c) 2006, Mike H. Symons, Canada, All Rights Reserved.

Answer session

I will give you the answer to Mike-san's question.

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