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Guy Munro

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Posted on Sunday, May 21, 2006 - 09:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

I have a manual Micro Nikkor 55mm lens and it stays open at f2.8, i.e. maximum aperture. Anybody knows if it is a simple, low cost job to repair this? Or would it be too much for the value of the lens? I loved this lens because I could take very sharp pictures with it. I live in Montreal, Canada.
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Stuart Willis

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Posted on Monday, May 22, 2006 - 12:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

The first incarnation of the 55mm Micro-Nilkkor featured an automatic extra exposure Stop when in close focus. Such was a pain in the posterior. Nikon responded to market forces and dispensed with such feature on later models. I am simply saying that the Micro-Nikkor is a little more complicated than the norm.

It is arguably one of the finest lenses ever produced by Nikon and you'd be well advised not to fiddle with it. I would be taking to the Canadian Nikon Importer Service Department and asking for a service estimate.

Hope this helps
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rick oleson

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Posted on Monday, May 22, 2006 - 08:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

This problem is probably caused by the diaphragm blades being sticky with oil. In the 55/2.8 Micro Nikkor the diaphragm is removable from the rear as a unit for cleaning.... it is not difficult or time consuming to do and the repair should not be expensive.

A more common problem in this lens is stiff focusing, caused by the extra helical that operates a floating internal element to improve image quality at longer distances. Having this fixed at the same time will increase the cost but it's probably worth doing.
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Guy Munro

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Posted on Tuesday, May 23, 2006 - 08:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Thanks a lot for those answers. I will have the lens examined by Nikon for an estimate. I hope it is only caused by the diaphragm blades being sticky with oil. I won't play with it myself, having neither the tools nor the knowledge to do it.
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Don

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Posted on Saturday, June 03, 2006 - 10:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Hi,

My name is Don and I'm from www.procamerarepair.com, we would de-assemble the entire lens and place the diaphragm blades in an ultrasonic cleaner and clean all the optics for about $95+10s/h. If Nikon decides not to repair it, feel free to send it over yonder.

Kind regards
Don

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