Could the mount be just slightly bent and loose enough that it pulls
away from the body in degrees which varies with the weight of the lens
attached?
It is assumed there is no screw hole on the adaptall sitting over the
spot switch and that the switch is indeed in good working order and not
clipped by said mount. Unusual.
There's also a problem not related to impact. The plastic frame that
the top cover spot switch is mounted to is held tight against the top
cover be 3 screws going into plastic posts. It is quite common for the
plastic posts to crack, plastic frame rises and spot button will no
longer be able to make contact when it is depressed. If this were the
case it would most likely malfunction with all lenses.
John
CPS, Inc.
On 11/30/2007 12:16:00 PM, Piers Hemy (piers@xxxxxxxx) wrote:
> Hmm, that sounds very puzzling....
>
> --
> Piers
>
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On
> Behalf
> Of Fabio Fiorellato
> Sent: 30 November 2007 16:51
> To: olympus@xxxxxxxxxx
> Subject: [OM] Re: - Adaptall-2 and OM-4Ti
>
>
> Piers,
>
> it's not a matter of lens, as by switching (with the same adaptall-2 mount)
> to a pristine 90mm f/2.5 macro, the behaviour is the same.
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