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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