Mike,
I had a hint of the problem when I used my Fotodiox adapter to mount my
200/4 Takumar on my E-510. The Fotodiox is also a 2-piece adapter. When I
felt the first hint of looseness, I snugged up all of the screws and have
been careful since then when heavy lenses were in use.
I'm told that some adapters are made in one piece, but I don't have a list
of the suppliers.
Jim Nichols
Tullahoma, TN USA
----- Original Message -----
From: "Mike" <watershed@xxxxxxxxxxxxxxx>
To: "1" <olympus@xxxxxxxxxx>
Sent: Sunday, September 07, 2008 1:46 PM
Subject: [OM] Scary moment
>
> This morning while taking some photos with the 135/4.5 mounted on my
> E510 on tripod. I suddenly found myself holding the lens and extension
> tube in my hand. The three screws that hold the adapter together came
> loose and the lens just fell off. Beware! Luckily I was focusing at the
> time and caught the lens before it hit the deck. These tiny screws
> extend an extremely short distance into the soft aluminum so it will
> take very little stress to strip them out. I'll have to rethink mounting
> the 300/2.8 via these adapters from jinfinance. Perhaps I can drill and
> tap for larger diameter and longer screws. In the meantime I reassembled
> the adapter and the threads seemed to bite but a little too much torque
> will easily break them loose. Definitely do not stress this joint. Check
> those screws folks.
>
> I also wonder if all adapters are created equal. Maybe some of you could
> pull a screw and take a look at the size. I'd like to know if other
> manufacturers make a more sturdy product. FWIW these screws mic @ 1.3mm
> diameter x 2.4mm length
>
> Mike
>
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