I haven't had the time to try it yet, but I was advised that buffing the
fogged 8mm element with cigarette ashes can remove fogging. This advice
by way of a Leica repair group. I concur, a bad initial coating during
creation.
___________________________________
John Hermanson | CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121 | www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html
On 2/6/2013 7:01 PM, Piers Hemy wrote:
> That is confirmed by my recollection of a conversation with a specialist OM
> repairer over here maybe ten years ago. He had just replaced the rear
> element of an 8mm, having secured a replacement element from Olympus UK. He
> was a little surprised to hear (from me) that John H. had reported they were
> no longer available in US or Japan, and cursed that if he had only known, he
> would have sent the replaced elements out to Optical Instruments Balham for
> polishing and re-coating. I'm not sure if he even searched the bins just in
> case.
>
> He couldn't do that now, unfortunately, OIB closed two years ago.
>
> Piers
>
> -----Original Message-----
> From: Andrew Fildes [mailto:afildes@xxxxxxxxxxxxx]
> Sent: 06 February 2013 23:21
> To: Olympus Camera Discussion
> Subject: Re: [OM] Awww, poop.
>
> No. The rear doublet is very small and odd but doesn't suffer this way. The
> problem occurs in the space between that and the next element - the two
> opposing surfaces haze over and become etched - they can be repolished and
> single recoated by specialist services. As to what causes it in just one
> specific location - that's a mystery. There's no lubricant in there (the
> lens focuses by a simple helical that moves the whole lens unit forward) and
> the elements are held in place by simple spacer rings in a tube. My bet is a
> failure of specialised coatings on just those two surfaces.
> Andrew Fildes
> afildes@xxxxxxxxxxxxx
> www.soultheft.com
> Author/Publisher: The SLR Compendium - http://www.blurb.com/books/3732813
>
>
>
> On 07/02/2013, at 2:49 AM, Sawyer, Edward wrote:
>
>> The OM 8mm fisheye lens suffers from this same endemic failure. Almost
>> all of them have a clouded element in the rear. It must be some sort
>> of issue with the cement in a cemented pair of elements.
>
> --
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