the front threads on mine also appear to be 84-85 mm, but the cap says 86mm.
I'm having as much fun cleaning this lens up as I had with my other old
ones, this one wasn't used for nearly 20 years when he got it from an avid
photographer, they sure don't look pristine, but the movement and all are
just beautiful none the less. every time I think it is clean, I find more
smears, but none the less, it is much sharper than any of my past non 4/3rds
zoom lenses.
I think I'll now punish myself and take it to the camera shot and comparer
it against the Celestron 500 5.6 f they had there and see if I still want to
look at $250 for that one instead of this one. I'm outta money, it should be
safe to go there now.
Scott
----- Original Message -----
From: "Darin" <d.rhein@xxxxxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Monday, March 19, 2007 1:19 AM
Subject: [OM] Re: The "ZEN" of CAT lenses
>
> FYI, there seems to be a third, even earlier, version of this lens.
>
> It appears to be virtually identical to the 1970s to early 1980s version,
> with the exception of the front filter size.
>
> I bought this lens on ebay, it came with its original case, hood, and the
> 22.5mm filter holder with neutral filter in place. I wanted to get a front
> cap and polarizing filter for the lens, so I ordered an 86mm snap-on cap
> from the Sigma website. When the cap arrived, I was surprised to find the
> cap to be just a little to large, so I called their customer service
> department. They looked up my lens by the serial number, all they were
> able
> to find was a picture of the lens w/hood, no front cap. The person I
> talked
> to suggested it must be an earlier version, which he had never seen
> before,
> that didn't come with a front cap.
>
> I've since measured the threads with calipers, they appear to be 84mm or
> 85mm. I've also taken the lens to several camera shops, trying to find a
> cap
> or filter that will fit, so far no luck.
>
> Who knows, maybe I've got some uber-rare million dollar prototype or
> something.
>
> Hey, I can dream, can't I?
>
> Darin
>
> ----- Original Message -----
> From: USHER99@xxxxxxx
>>
>> Thought I should fwd this to the list. There had been some debate about
>> the
>> newest version of the Sigma 600 f8 mirror lens. Jeff had thought the
>> Zen
>> colored one was most likely the latest as it was the newest color and
>> still
>> used. Others thought a smaller version may have been the latest. See
>> below for
>> the answer. I may hold out for a
>> "NATO Green." Sigma was quite considerate to reply to a query.
>>
>> Mike (who is yet to make his first doughnut)
>>
>> Oh, I have a brochure (old) with a few images. They could use more
>> contrast
>> and are a bit soft though have seen others that were very nice s/p a
>> touch
>> of Moosterization.
>>
>> Dear Mike
>>
>> Thank you for your inquiry. The ZEN finish used on the 600mm F8 Mirror
>> lenses was the latest finish. You don't really give enough information
>> to
>> accurately identify which models are in question. However, the filter
>> size
>> can give some indication of relative ages of the models. Lenses with
>> filter
>> sizes 86mm (front) and 22.5mm Drop-in were made in the 1970s and early
>> 1980s. They had a glossy black finish on the lens barrel. Lenses with
>> filters sizes 92mm (front) and 30.5mm (drop-in) were made in mid-1980s
>> to
>> about 2003,and had a variety of colors (NATO Green, Pearl tone and Gun
>> Metallic grey) for barrel finish, culminating with the latest (ZEN).
>> So,
>> the ZEN finish model would be the latest model of 600mm Mirror lens.
>> All
>> production of 600mm lenses was discontinued about 2003. We hope this
>> information is helpful to you.
>>
>> Sincerely
>>
>> SCA-
>>
>
>
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