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[OM] Re: Focus screen 1-1

Subject: [OM] Re: Focus screen 1-1
From: Gregg Iverson <golftooter@xxxxxxxxxxxx>
Date: Sun, 22 Feb 2004 22:46:14 -0500
Interesting Moose,

Where is the tab in relationship to these boxes?  My dots were immediately 
to the right of the number 1.

gregg


>All right, you asked for it. A local survey reveals 5 (!) different tab
>markings for 1-1 screens.
>Imagine this grid:
>_____
>|_|_|_|  With the top line of boxes labeled 1, 2, 3.
>|_|_|_|  And the bottom row labeled 4, 5, 6.
>
>I found a total of 8 screens:
>1 screen with no dot at all  1(0).
>3 screens with 1 dot in position 4  1(1).
>2 screens with 2 dots in positions 4 and 6  1(2a).
>1 screen with 2 dots in postitions 2 and 6  1(2b).
>1 screen with 3 dots in positions 1, 4 and 6 1(3).
>
>Seven of these screens were in cameras, for which the serial numbers are:
>1(0)     206,xxx
>1(2a)    281,xxx
>1(1)     554,xxx
>1(1)     679,xxx
>1(3)     902,xxx
>1(2b)  1,096,xxx
>1(2a)  1,100,xxx
>
>No solid pattern, just a general trend, but screens do get interchanged.
>Now we can assume some complex hidden differences.... Or simply that
>they are marks to show which of several molds a given screen came out
>of, so any flaws can be traced to the source.
>
>Now there's about an hour of my life I'll never get back. But.......
>There was a payoff. One body I checked had a pristine 1-7 screen in it
>that I hadn't noticed. It now has a 1-13 and the 1-7 is in a nice Oly
>screen box.
>
>In answer to the inevitable question, yes, I'm trying to corner the
>market in black OM-1 bodies. (Evil cackles, hands wrung together
>evilly!). Really, I have this little project to create a few close to
>mint black OM-1 bodies (and keep the best one for myself!). To that end
>there are some good OM-1 bodies (some CLAed), some OM-1 parts bodies,
>some OM-10 and G(20) parts bodies with good prisms and a few new old
>stock black top plates. Trouble is, I'm way behind schedule, whatever it
>was. Retirement is so seductive, so many lovely time-consuming
>non-activities to participate in, like this list.
>
>Moose
>
>golftooter@xxxxxxxxxxxx wrote:
>
> >I was swapping around focus screens in my cameras today and noticed that
> >one of the 1-1 screens is labeled 1.  (1 dot ) while another one is labeled
> >1..  (1 dot dot). Does anyone know if there is a difference in them.  I
> >double checked with a reversed 50mm/1.8 just to be sure of what I saw.  The
> >second one has two distinct raised bumps where the first one only has one.
> >
> >We have discussed Phillips vs slotted screws on 50mm lens mounts, but I
> >don't remember anything about raised bumps on screens!
> >
> >gregg
> >
> >
>
>
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