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Re: Re: [OM] Unusual Zuiko lens

Subject: Re: Re: [OM] Unusual Zuiko lens
From: Skip Williams <skipwilliams@xxxxxxxxx>
Date: Fri, 16 Mar 2001 00:10:55 -0500
Cc: daan@xxxxxxxxxxxxx, hcvanveluwen@xxxxxxxxx
OK, I've worked on this picture, and I believe that I have the answers for all the "mysteries".

http://www.skipwilliams.com/albums/om-lit/pages/Zuikos-1974.htm

I tagged many of the lenses. Several were confusing, and I lost interest in identifying many of the wide angle lenses for no purpose.

The lens you tagged as 75-150/4 looks a lot like the 200/5 with its thick
focusing ring; the only problem is that the two lenses right behind the body can only be the 200/4 and 200/5 - their relative height corresponds to that (I have
both).

The two 200mm lenses are right together. You can read the aperture rings. I too have the lenses.

The 75-150/4 is where I thought it was on the right. Notice that there isn't any aperture ring ahead of the focusing ring. It's on the rear of the lens, like the zoom is. Also, it matches the height in the lens charts, which between the two 200mm lenses.

: Yes, I think that the early prototype 75-150 is just to the right of the OM-1.

If this is right than there are two other lenses with built-on hoods in the
picture, and not identified yet, and they must be the 135/3.5 and 135/2.8.
Looking at their shape the 135/2.8 must be the one in the front near the
fisheyes and the 135/3.5 (which also has a relative thick focusing ring) must be
the one you tagged as the 75-150 - right behind the 135/4.5 macro prototype
(which by the way probably not sits on an extension tube but on its long rear
cap).

I was wrong. There is no picture of either prototype zoom lens. The 135's are indicated, one (135/2.8) is near the front, the 135/3.5 is next to the OM-1. You are probably right about the 135/4.5's long rear cap. It just looked longer in the picture.

:Maybe it's the 90-250/5 that's listed on the system chart in the same brochure?

I've never seen photo's of this lens before (I know it is mentioned in early
brochures).

: Hans - any other ideas?

Yes - I think some of us are so frustrated that Olympus doesn't introduce
anything new anymore for OM that we spend hours and hours analyzing old pictures
containing obsolete units that never went into production anyway ;)

Yes, we are very frustrated.

Skip


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