That's not unheard of. Most of the larger/longer/heavier OM lenses have a
tripod mount, but not the zooms (except for the 85-250mm). The camera's
tripod mount wasn't designed to support that much weight. Yes, using it to
hold up a heavy lens can deform the casting causing all sorts of different
problems.
Chris Barker wrote:
> Some of you may remember that I complained during the Winter of a
> problem with my 50-250/5. The mirror in my OM4 remained up sometimes
> when using this lens. I thought at the time that it was the cold and
> my batteries.
>
> Well, while I was at Duxford some weekends ago (must scan those shots)
> I realised that the problem occurred when I was propping the
> camera/zoom ensemble on my CamCane, and that the problem cleared when I
> was holding the lens and camera together. Perhaps I have been putting
> too much pressure on the lens mount and causing interference with the
> mirror assembly or shutter system.
>
> Has anyone else detected this sort of problem?
>
> Chris
>
> p.s. this shows that I am capable of writing on-topic sometimes ;-) cb
> <|_:-)_|>
>
> C M I Barker
> Cambridgeshire, Great Britain.
> 
> +44 (0)7092 251126
> ftog at threeshoes.co.uk
> http://www.threeshoes.co.uk
> http://homepage.mac.com/zuiko
> ... a nascent photo library.
>
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