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Re: [OM] Infrared Marking (Was 35-70 F/3.5-4.5 formula)

Subject: Re: [OM] Infrared Marking (Was 35-70 F/3.5-4.5 formula)
From: Tomoko Yamamoto <tomokoy@xxxxxxxxx>
Date: Sun, 08 Feb 1998 00:04:01 -0800
At 10:30 PM 2/6/98 +0100, Lars Haven wrote:
>Tomoko Yamamoto wrote:
>> 
>> I checked my collection of Zuiko lenses.  The ones with a red dot for IR
are
>> 
>> 135mm/3.5
>> 35mm/2.8 shift
>> 200mm/5
>> 
>> The ones without are:
>> 
>> 50mm/1.8 (Mine is an M-system lens that came with my M-1)
>> 28mm/2.8
>> 35-70mm/3.5-4.5
>> 35-70mm/3.5-4.8 (latest zoom)
>> 100mm/2.8
>> 
>> If I remember correctly, the latest zoom 70-210mm/4.5-5.6 has an infrared
>> mark.
>> 
>> 
>I too have checked my Zuiko collection: All the fixed focal lengths have
>an IR focus mark. However on most the IR mark coincides with one if the
>DOF markings, which is red instead of black. The ones I have checked are:
>24mm/2.8 (DOF mark), 28mm/3.5 (DOF mark), 35mm/2.0 (DOF mark),
>50mm/1.8 (DOF mark), 50mm/1.4 (DOF mark), 50mm/3.5 macro (DOF mark),
>85mm/2.0 (DOF mark), 100mm/2.8 (DOF mark), 200mm/4.0 (separate dot)
>and 300mm/4.5 (separate dot).
>
>The zooms, 75-150mm/4.0 and 28-48/4.0, do not have an IR mark.
>
>It would appear that there are variants, re. Tomoko's 50/1.8 and 100mm.
>
My three primes, 28/2.8, 50/1.8, and 100/2.8, all have an IR mark (a red
DOF line rather than a red dot).
My earlier post was due to my overlooking the red DOF lines, which I have
corred in my later post.



Tomoko Yamamoto
Photographer, Composer, Soprano
mailto:tomokoy@xxxxxxxxx
http://www.charm.net/~tomokoy/
-All the photos (except panorama) with OM's-
http://ep.com/ep/csp.html?csp=1130
-Olympus Equipment Classifieds-

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