I never noticed it, but with the barrel fully extended, if the 12-100/4
was shaken side to side it does rattle
I can not check my 12-40/2.8 as it is in my office right now, but I
would expect the same thing.
In all fairness, I do not know any photographers that shake their
cameras side to side that vigorously when shooting.
I would say this is normal. If it were tight enough at full extension
to not move, it would be very hard to zoom
Mark
Sent: Friday, August 28, 2020 at 6:07 PM
From: "Wayne Shumaker" <om3ti@xxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Subject: Re: [OM] Question on Zuiko Pro lens construction tolerance
At 8/28/2020 12:37 PM, Larry wrote:
>I just purchased a refurbished M. Zuiko 12-100mm lens directly from
Olympus. As soon as I unboxed it today, I heard a rattle sound if I
shook the lens. It appears that the extending lens tube (the piece
that gets longer when you zoom the lens out from 12mm) is a little
loose. The rattle is more pronounced at 100mm than at 12mm. Is this
normal, or have I received a lens that is not as tight as it should be?
>
>Similarly (or maybe coincidentally), about two weeks ago I noticed a
similar looseness in the extending tube of my 12-40mm M. Zuiko lens
when it was at the 40mm end. I had not noticed that before. After
seeing this problem on the 12-100mm lens, I gave a closer look at my
12-40mm lens, and saw that the extending tube was loose and rattled at
all focal lengths, though more pronounced at the 40mm end. Again my
question is: Is this normal and I just hadn't noticed it before, or has
something loosened up, and the lens should get maintenance? The
12-40mm is about five years old, and I purchased it new. For whatever
it is worth, the looseness and shaking is much less noticeable in the
smaller lens.
>
>Advice, please?
I have no experience with those lenses. Only question I would ask is
does it go away when mounted on a camera and camera powered on? If
still rattle, I would definitely say the lens has a problem.
WayneS
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