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RE: [OM] Focusing Screens

Subject: RE: [OM] Focusing Screens
From: "daniel" <danrich@xxxxxxxxxxxxx>
Date: Fri, 30 May 2003 10:54:59 -1000
Thanks, I wouldn't think KEH would sell me a faulty lens rated at
excellent.
KEH is a great camera co.
I'll look into maybe other screens 
1-4
1-4n
1-8
2-4


-----Original Message-----
From: owner-olympus@xxxxxxxxxxxxxxx
[mailto:owner-olympus@xxxxxxxxxxxxxxx] On Behalf Of Piers Hemy
Sent: Friday, May 30, 2003 10:41 AM
To: olympus@xxxxxxxxxxxxxxx
Subject: RE: [OM] Focusing Screens

I'm still not sure I'm with you Dan.  Past infinity?  Surely not - we'll
have someone chiming in with Buzz Lightyear comments if we ain't
careful!

Perhaps what you are seeing is the ability to bring the lens into focus
on
something in the distance, and then go out of focus again - but that
would
be because "in the distance" actually isn't at infinity.  That's a
phenomenon I experienced when first using a 500mm mirror lens - it's as
if
infinity has syuddenly jumped back a mile or ten.  But not a 'fault'
with
either lens or camera.

Piers

-----Original Message-----
From: owner-olympus@xxxxxxxxxxxxxxx
[mailto:owner-olympus@xxxxxxxxxxxxxxx]
On Behalf Of daniel
Sent: 30 May 2003 20:26
To: olympus@xxxxxxxxxxxxxxx
Subject: RE: [OM] Focusing Screens


What focus screen are you using?
Dan

I think its fine, just getting the right screen I think.
It will go just a bit past infinity in focus, after reaching it, I can
still
go a little more noticing the focus screen split image shift.
Common for Tamrons?
Just took some pictures but maybe I need to get use to it because it
sure is
sweet and handy lens.
Seems that the lens is critical it focus much like a macro that can
cause
everything around it to be out of focus quickly.
That must be how it achieves that out of focus look around a portrait so
well?
Dan

In a message dated 5/30/2003 3:17:45 PM Eastern Daylight Time,
om@xxxxxxxxxxxxxxxx writes:




I borrowed a 180/2.5 that wouldn't reach infinity.  Perhaps it's a
common
problem with the lenses?

Skip


I'll chime in.  It's my 180 that Skip borrowed and found unable to focus
to
infinity.  After Skip alerted me to the problem, I sent it off to
Tamron,
who said the focusing helicoid had been damaged and needed to be
replaced.
I had it done (it did cost a few), but the lens works fine now.   I
never
really checked infinity focus on it before because I use it more as a
long
macro lens.

So maybe it is a problem unique to this lens.  Its worth fixing, though.
Takes great images.

Best,

Greg L.



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