Sorry that should be "unscrew FRONT lens group"
___________________________________
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
John Hermanson wrote:
> Remove lens hood (unscrews from knurled ring), remove set screws,
> unscrew from lens group. Element 3 & 4 (cemented into a group) are
> permanently mounted into the lens tube.
> ___________________________________
> 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
>
>
> Chuck Norcutt wrote:
>> Sorry, I don't know any details on the 300/4.5 but perhaps the exploded
>> parts diagram from Mark Dapoz's site will help
>> <http://olympus.dementia.org/Hardware/PDFs/300mm_f4.5.pdf>
>>
>> Chuck Norcutt
>>
>> Gary W. Marklund wrote:
>>> Chuck,
>>>
>>> Thanks for the very helpful reply. Unfortunately, it isn't on the
>>> outside. Good news is, I got the name ring off without incident or slip.
>>> Also, the second ring. I'm still digging. The third ring seems
>>> different, if there is one. I don't see any slots to take a spanner.
>>> Looks like I'm getting close to the fungus, but don't know how to remove
>>> the third element. Any ideas?
>>>
>>> Thanks again,
>>> Gary
>>>
>>> Chuck Norcutt wrote:
>>>> Depends on what you consider "salvaged". If the fungus hasn't been
>>>> there very long and is not widespread you may be able to clean it off
>>>> without any apparent ill effect. But fungi exude acids that will etch
>>>> whatever they're living on. Fortunately, life as a fungus doesn't
>>>> proceed at anything like a torrid pace. I have cleaned fungus spots off
>>>> a couple of lenses where I can't tell there was ever anything there...
>>>> meaning I can't locate exactly where the fungus was.
>>>>
>>>> If it's on the outside you are lucky and can easily clean it. If it's
>>>> on the inside you may not be able to do anything. According to
>>>> discussions that were going on here recently the 300/4.5 has a tendency
>>>> for the name ring to be assembled with glue and too much of it at that.
>>>> It may be next to impossible to unscrew the name ring to get the lens
>>>> open for cleaning.
>>>>
>>>> When cleaning fungus I have used John Hermanson's suggested method which
>>>> is to use a dab of women's cold cream. I think he specified "Pond's"
>>>> brand but I used whatever my wife had in her cosmetics drawer and it
>>>> worked fine. The other cleaner (taught by the Olympus factory "sensei")
>>>> was "nose oil". That's exactly what it sounds like. Skin oil picked up
>>>> by rubbing your finger on the tip of your nose and then rubbing your
>>>> finger tip on the fungus spot. Skin oil (fortunately for us) has
>>>> anti-fungal properties and the tip of the nose is liberally supplied
>>>> with oil glands.
>>>>
>>>> Chuck Norcutt
>>>>
>>>>
>>>> Gary W. Marklund wrote:
>>>>
>>>>> I have an Olympus Zuiko 300mm f/4.5 that has a couple of fungus "stars".
>>>>> Does anyone know if this is salvageable? I only discovered them when I
>>>>> went to list the lens for sale.
>>>>>
>>>>> Thanks,
>>>>> Gary
>>>>>
>>>>>
--
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