I agree with your diagnosis if it simply moves freely. But I can
hypothesize that it might have been made adjustable to relieve
manufacturing tolerances. But in that case there should be a screw that
will lock it in place after adjustment.
Chuck Norcutt
Darin wrote:
> Hi Jeff,
>
> On your lens, is the tab in a slot like on a lens with a variable aperture,
> or is it a fixed tab on the mount? I really think this is not the original
> mount for the lens, it just makes no sense to me for the tab to be able to
> move on a fixed aperture lens.
>
> Darin
>
> ----- Original Message -----
> From: "Jeff Keller" <jrk_om@xxxxxxxxxxx>
> To: <olympus@xxxxxxxxxx>
> Sent: Friday, March 31, 2006 8:01 AM
> Subject: [OM] Re: Sigma 600mm F8 reflex lens?
>
>
>
>>
>>Interesting ... I have one that what was sold as new in box (and probably
>>is). The ring was put on the lens rotated (the holes are symmetrical so
>>the
>>ring can be rotated and still line up with the holes). The tab catches
>>part
>>of the camera mechanism preventing it from working.
>>
>>The quality control at Sig(nificant) Ma(lfunction) was unfortunate. They
>>seem to have good ideas.
>>
>>-jeff
>>
>>----Original Message Follows----
>>From: "Darin" <d.rhein@xxxxxxxxxxx>
>>
>>Hello all,
>>
>>I purchased this lens on ebay and have a questions about it. If any list
>>members have one, or have had one in the past, I appreciate any help you
>>can
>>give me. My question is about the mount, which shows sighs of tampering
>>(worn screws), or to be more specific the diaphram linkage tab. This being
>>a
>>fixed aperture lens, I would think the tab would be set at a fixed
>>position,
>>but it moves somewhat freely through out the slot in the mount. Is this
>>normal, or has the mount been replaced?
>>
>>TIA,
>>Darin
>>
>>
>>
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>>
>
>
>
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