PS, if trying to unscrew the front lens tube, I use a tool I found at
Sears. It's a plastic handle with a rubber strap that winds around the
lens. It gives you the extra torque you'll need to get the 2 tubes apart.
___________________________________
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
Gary W. Marklund wrote:
> I'll give that a try this week. If the uv doesn't kill the buggers, the
> heat will. It's been 115 F more days than I want to think about. Think
> we are setting a record for most consecutive days at 110 F and over.
>
> Gary
>
> Chuck Norcutt wrote:
>> That's very interesting. I'd have said it's impossible to have a lens
>> with fungus in Arizona or Nevada. Of course, dark is also a good
>> environment if you're a spore. Some folks believe in bringing the
>> lenses out into the sun and giving them a good UV treatment for several
>> days.
>>
>> Chuck Norcutt
>>
>>
>> Gary W. Marklund wrote:
>>
>>> Thanks, Chuck. I live in Arizona and keep all my cameras except large
>>> format in my gun safe. The humidity is very low and the room where this
>>> is stored is on the same AC unit as my darkroom which is kept at about
>>> 68 F, so it's fairly cool in here as well.
>>>
>>> Gary
>>>
>>> Chuck Norcutt wrote:
>>>
>>>> Unless it's really huge you're unlikely to see any effect on the image.
>>>> However, unless it's cleaned it may continue to grow. Store it in a
>>>> dry place under 50% humidity. The illness is not likely to be catching.
>>>> The spores were probably already inside the lens and may be inside the
>>>> others as well. It's just a matter of temperature and humidity whether
>>>> they have conditions favorable for growth. Keep them all dry.
>>>>
>>>> Chuck Norcutt
>>>>
>>>> Gary W. Marklund wrote:
>>>>
>>>>
>>>>> Chuck,
>>>>>
>>>>> Ouch! It's down in the part where it starts to get complicated. Looks
>>>>> like that entire assembly needs to be removed and then there are two
>>>>> elements that are touching. That is where the fungus is. Think I'll put
>>>>> it back together and run a test roll to see if I can see any affect on
>>>>> the image. If not, I'll continue to use it, but store it way from my
>>>>> other gear. If I see it on the image, maybe I'll see if John wants to
>>>>> take a crack at it.
>>>>>
>>>>> Thanks for all your help.
>>>>>
>>>>> Gary
>>>>>
>>>>> 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
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>> ------------------------------------------------------------------------
>>>>>>>
>>>>>>>
>>>>>>> No virus found in this incoming message.
>>>>>>> Checked by AVG - www.avg.com
>>>>>>> Version: 8.5.375 / Virus Database: 270.13.19/2245 - Release Date:
>>>>>>> 07/18/09 05:57:00
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>> ------------------------------------------------------------------------
>>>>>
>>>>>
>>>>> No virus found in this incoming message.
>>>>> Checked by AVG - www.avg.com
>>>>> Version: 8.5.375 / Virus Database: 270.13.19/2245 - Release Date:
>>>>> 07/18/09 05:57:00
>>>>>
>>>>>
>>>>>
>>> ------------------------------------------------------------------------
>>>
>>>
>>> No virus found in this incoming message.
>>> Checked by AVG - www.avg.com
>>> Version: 8.5.375 / Virus Database: 270.13.19/2247 - Release Date: 07/18/09
>>> 21:14:00
>>>
>>>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|