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RE: [OM] Tamron adaptall panic

Subject: RE: [OM] Tamron adaptall panic
From: "IanG" <I@xxxxxxxxxxx>
Date: Wed, 27 Nov 2002 23:13:01 -0000
Ah hah... thanks. The black plastic thingamebob is below 9 o'clock on my OM4

-----Original Message-----
From: owner-olympus@xxxxxxxxxxxxxxx
[mailto:owner-olympus@xxxxxxxxxxxxxxx]On Behalf Of Brian Swale
Sent: 27 November 2002 23:05
To: jackson.robert.r@xxxxxxxxx; olympus@xxxxxxxxxxxxxxx
Subject: Re: [OM] Tamron adaptall panic


Hi Robert

If you look at the lens-mounting base-plate of your OM4T, at about 10
o'clock
you should see a little black plastic pimple sticking out.

Press it, and it retreats back inside the mount plate. This is the lever to
an
important switch that tells the electronics a few things such as if there's
a
lens on or not. (If not, the exposure meter is turned off, for one.)

Tamron adapter screw holes are machined so that the edges are razor-
sharp, and cut the top off that pimple so that it doesn't work the switch.
But
only the 4-screw Tamron adapters do this since this is the only version with
a screw-hole situated just where it will do a face job on the plastic
pimple.
The 3-screw adapters are OK.

If you have a 4-screw lens plate, do something to the dangerous screw hole
to prevent damage. Rubber-glue in a flush piece of plastic, or fill the hole
with
epoxy, for two methods.

Brian

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