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Re: [OM] Lens + body Cleaning + F. Screen change

Subject: Re: [OM] Lens + body Cleaning + F. Screen change
From: Doggre@xxxxxxx
Date: Fri, 13 Jul 2001 09:37:03 EDT
In a message dated 7/13/01 4:48:39 AM Pacific Daylight Time, 
qcabrera@xxxxxxxxxx writes:

(with regards to cleaning)
>Let's have a little of Oly Sesame Street. Just a few tips for us 
beginners:
>snip< 

(Ernie voice....)

Hi, Enrique.  Here goes:

First, brush major dust particles, etc. from the glass with a lens brush.

Second, air blast.  I use a can of compressed air.  Rather expensive, but IT 
WORKS!!  Careful, keep the can as level as possible, and give a little short 
blast away from the glass first, or you might be spraying propellant gunk on 
your glass!  Don't blow with your mouth.  That air isn't clean.  Saliva, food 
particles, human cells, etc. (bleahhhh!!!).

Third... now comes the scary part...

I Don't know what others do for their viewfinders, Enrique, but I use a Q-Tip 
(cotton-tipped swab) and methanol ( isopropyl alcohol) -- not much, just a 
drop or two.  You don't want liquid running down inside the body.  You can 
pull and twist & form the end of the cotton to fit into all the corners.  
Works for me.  Use the first one to get the major gunk.  Use the other end to 
get the rest.  Then another, always turning so you are always using clean 
cotton, not just rubbing the dirt around on the glass.  Another, and another, 
if needed, until you are happy.  After this, maybe just a warm breath to fog 
it, and wipe one final time, to remove any leftover streaks from the methanol.

Be gentle, and careful.  Q-Tips are cheap.  The replacement viewfinder on my 
OM-2S was $64 plus two trips to town (and worry, and prayer).  I don't want 
to have to replace one again, EVER.

With regards to lenses, same priniple applies, 1) brush, 2) air blast, and 3) 
wipe.  I've tried the toilet tissue and alcohol/methanol technique, and by 
golly, it works!!!  In order to avoid getting too much liquid on the lens, 
and risk having it run down into the inner workings of the lens, I moisten 
the tissue first in just a couple spots with a moistened Q-Tip.  Just a 
LITTLE bit works.  Gentle pressure, wipe from the center out towards the 
edges.  If you wipe around the edges, you risk picking up grit and scratching 
nice little circular scratches in the lens.  A couple of wipes, throw it away 
and get clean tissue, and repeat.  Again, tissue (ANY kind) is cheap relative 
to Zuiko glass, no?  EVER so gently.

Some folks have mentioned an old clean t-shirt.  I use that almost every day, 
when I clean my glasses.  Wash 'em, wipe 'em..... but still there are 
streaks.  A quick wipe with my clean t-shirt, and ta da!  No streaks.  Why 
wouldn't a CLEAN cotton t-shirt (old, so little risk of lint) work with 
Zuikos?  Any opinions?

I recently picked up one of the chamois cloth-like lens cloths, to carry when 
shooting.  Haven't used it yet, so can't say what I think of it.  When at the 
camera show recently, I spotted a desirable Zuiko (forget which, now).  
Picked it up, looked it over.  Looked clean.  I was excited (but no OMoney) 
Arrogant idiot salesman came over, smelling Zuikohol on my breath, I'm sure, 
said $300, firm,  then proceeded to SCRUB it for about a minute with one of 
those lens cloths.... turned me right off.  I'm sure its SC now.

Inside the body????  Gulp....  I don't go there, except to clean out the film 
compartment (see Q-Tips, above).  John H. has described his method for 
cleaning mirrors: a wooden chop stick sanded flat.  Cover with tissue, 
moisten with methanol, wipe from inside out, turn over, wipe, change tissue, 
repeat, etc..  There is a SMALL area on one corner of the mirror in my OM-2S 
that I'm tempted to try this technique on, but I've decided for now to leave 
it alone.  I doesn't affect image quality on the film, right?  And I can't 
see evidence of it thru the viewfinder, so why get obsessive about it?  I 
don't see enough dust inside any of my bodies to be concerned about, so I 
don't know how others may handle this.  For me, CLA (clean, lube, adjust) 
would be the time to address that (i.e., let the pros do it -- they know what 
they're doing).

Meantime, keep either a lens or body cap on the body AT ALL TIMES.  And keep 
lens caps or skylight or UV filters over your Zuiko glass, once cleaned, so 
you are wiping filters clean, and not Zuiko glass.

Focusing screen was recently discussed.  Lens brush, air blast.  Some have 
described washing with dishwashing detergent, rinsing, then rinsing again 
with distilled water, I think.  Air dry (DON'T WIPE!).  

Change the focusing screen with the Olympus tool provided, handle by the 
edges and tab.

Did I get it right Bert?  Bert?

Rich

P.S.  Who knows where the names Bert & Ernie came from?  (Hint: from a movie 
shown EVERY Christmas season)

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