Hi Ron,
I have seen loose lens mounts with some very cheap 3rd party lenses before. It
seems to have to do with bad production tolerances or wear.
Is your sample lens a Zuiko? Then it should fit perfectly to you camera body,
with a play in the range of tens of millimetres.
Please check whether the small bolt on the lens bajonet mount still is there.
This bolt is mounted about 170 degrees counterclockwise from the f-stop
indicator (seen from the rear side of the lens). My precious 85/2.0 had this
when I bought it very used and cheap.
Very excessive use could also have worn the camera body side of the bajonet
mount, but since looseness only is observed this this particular lens, this
should not be the case with yours.
Normally this looseness does not affect photography. As long as the bajonet
mount is light-tight. The small differences in the f-stop transmission are
beyond 1/3 f-stop, and TTL metering levels this small error out.
Hope this helps you a little
Best regards
Bernd Möller
----- Original Message -----
From: "Ron Yabroff" <rmyjmy@xxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Tuesday, September 18, 2001 1:15 PM
Subject: [OM] Looseness in lens mount
> I just bought a new lens for my 4ti. The lens mount rotates 1/16 or
> 1/32 of an inch when I use the zoom or focus rings. My other lenses
> don't do this. Has the mount been changed, or is there an adjustment
> that is needed? Thanks in advance.
> Ron
> --
>
>
>
>
>
> < This message was delivered via the Olympus Mailing List >
> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
> < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
>
>
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|