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Canon 50mm f3.5 Macro Lens// nFD version 1980 Haze behind first element

You have been recommended...so are #25 or 26 in the list of experts, none of whom have so far adequately addressed the issue I listed 2 days ago. This lens does not have a front bezel as do most lenses, nor are there screws to hold in the lens shroud which is approx. 1.5in deep, funnel shaped and sits nearly on top of the front of the first element. I need to remove the lens shroud to get to the retainer which holds the lens in place, to clean haze (not condensation) from the rear of the 1st lens element. I've already done the job for the rear lenses, located behind the diaphragm.This lens was manufactured after the Canon Lens Repair manual was published (I have a copy). The shroud rotates in place but doesn't extract, nor is there a clear way to remove it. I need specific guidance in removing the shroud so I can access the lens. If you have no experience with this specific lens (not the earlier SSC version) please don't guess...lots have tried and failed.

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  • scl8 Jan 12, 2009

    Thanks Steve, I've cleaned a number of lenses' interior surfaces over the years and most of them are still working great and crystal clear. You obviously understand why I want to get to the rear of that lens element, to reduce the possibility of fungus as well as bring the resolution and contrast up to the standard for this lens . Time is on my side, as I am retired and this lens is one of five (4 in excellent condition) macro lenses in my possession. Since I paid for expert advice in removing the shroud, that's what I am seeking.

  • Toyota Ed May 11, 2010

    Sir, If you do not get the advice that you seek, you are entitled to a refund.

  • Toyota Ed May 11, 2010

    SCL8...

    The expert who answered your question has impeccable credentials. He looked after periscope optics for the US Navy.

    His experience and input is beyond reproach.

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Wondering if you ever got an answer. I know the lens is clipped in place, but have not found a way either to open up the front of the nFD 50mm 3.5...

Posted on Sep 14, 2015

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Haze is condensation. I am schooled in optics and physics. Seriously, if you go to a local pawn shop they will verify what I say. Mold in the lens optics will follow. I would gladly send you a lens if you are destitute but do not throw bad money (time) after good. Steve Medley

Posted on Jan 12, 2009

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