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Re: [OM] 100 vs. 100

Subject: Re: [OM] 100 vs. 100
From: Jim Brokaw <jbrokaw@xxxxxxxxxxx>
Date: Tue, 06 Jan 2004 14:41:38 -0800
on 1/6/04 1:13 AM, Moose at olymoose@xxxxxxxxxxxxx wrote:

> Jim Couch wrote:
> 
>> One other thing to note, the 85/2 uses 49mm filters vs the 55mm
>> filters used on the 100/2. My "indoor low light" kit consists of  a
>> 28/2, 50/1.8, and 85/2, a very compact set of lenses that all use 49mm
>> filters. (Or at least did until the 28 got dropped over the holidays -
>> now it does not use filters, the filter ring is dented!) :)
> 
> My 28/2 has a dented filter ring too. I didn't do it, it was one of only
> a couple of bad 'Bay transactions I've had. What is the wisdom of the
> list about the best way to undent a filter ring??
> 
> Moose

I've had modest success with a home-made rig I found instructions for in a
book. I cut varying radius semicircle cuts in the edge of a 2x8 board I had
lying around using a coping saw. Then I bought some short 3/4" oak dowel
segments at Home Depot, and cut them at one end to a bevel and curve that
would fit best to the inner curve of a filter ring. With my third hand I
hold the lens in a curve closely matching the radius of the filter ring, and
then use the dowel and light (light!) taps of a hammer on then end of the
dowel to reshape the filter ring from the inside... its amazing how little
force is needed to rebend the ring out into a good curve again.

I've reshaped a few lenses (no Zuikos, thank goodness, have needed it) which
will then take filters again. I believe you can buy a commercial version of
this from MicroTools, but making it was easy and much cheaper.
-- 

Jim Brokaw
OM-'s of all sorts, and no OM-oney...




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