I hadn't thought of that. Maybe I should get the creep fixed.
Chuck Norcutt
On 6/26/2014 6:59 AM, Paul Braun wrote:
Mine has the same problem. Really irritating, be cause now it would be a
reasonably fast 400....
Paul Braun
Certified Music Junkie
"Music washes from the soul the dust of everyday life.". -- Berthold Auerbach
On Jun 26, 2014, at 2:36, Chris Crawford <chris@xxxxxxxxxxxxxxxxxxxxxx> wrote:
The OM 65-200 f4 zoom had the same problem. I have one of them my father
bought new when I was a kid. I used to do a lot of photography with it
when I was younger, but its worthless now. I've seen several others in the
last couple years for sale, and all had the same issue. Sucks, because it
was a pretty sharp lens for a 1980's zoom.
I shot these with it when I was 15. 23 years ago!
http://chriscrawfordphoto.com/chris-details.php?product=866
http://chriscrawfordphoto.com/chris-details.php?product=932
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On 6/26/14 2:57 AM, "Andrew Fildes" <afildes@xxxxxxxxxxxxx> wrote:
Yes - I've had this. The fogging is over the outer surface of the inner
lens - the side facing the internal space. Sometimes the element facing
it is also affected. I've had both faces repolished on one pair by a
Sydney specialist - resurface and single coating. He charged by the
surface on the demounted lenses. It was not necessary to separate the
tiny rear doublet.
And don't ask - he's retired. I found him by asking a television station
serviceperson who had to deal with a lot of damaged lenses.
I don't know what causes it in this specific way on this specific lens
but it's quite unusual. An even frost etching over the whole surface,
nothing like fungus.
Andrew Fildes
afildes@xxxxxxxxxxxxx
Author/Publisher:
The SLR Compendium,The TLR Compendium
http://www.soultheft.com/storehouse_photopublish/
On 26/06/2014, at 9:44 AM, John Hermanson wrote:
Fogging (like white frosted) is all over outside of element. Sad, I
have a super clean 8mm with this defect.
___________________________________
John Hermanson | CPS, Inc.
21 South Ln., Huntington NY 11743
www.zuiko.com | omtech1@xxxxxxxxxxx
Olympus OM Service since 1977
On 6/25/2014 11:19 AM, Sawyer, Edward wrote:
The only real possible solution for this is extract the inner element
pair
(presuming it's a cemented pair), de-cement them, and re-cement them
with
new cement. Edmund Optics carries the tools and supplies you would need
for this. It's not a trivial piece of work, and would only be worth
trying
on an otherwise useless lens.
The above assumes the fogging is in the cementing, which is probable.
However, some types of glass can chemically change with time,
effectively
dissipating some of their materials to the surface of the glass,
resulting
in permanent haze. Not sure if the OM fisheyes are of that nature or if
it's cemented elements that are to blame.
The mamiya RZ67 75mm shift/SB lenses have a common ailment like this
too,
in a rear cemented pair.
-Ed
On 6/24/14 6:16 AM, "olympus-request@xxxxxxxxxxxxxxxxx"
<olympus-request@xxxxxxxxxxxxxxxxx> wrote:
[OM] 8mm OM analogue 2.8 OM fisheye users please contact me
off-list
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