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[OM] Introduction dates of macro equipment

Subject: [OM] Introduction dates of macro equipment
From: Alan Wood <alan.wood@xxxxxxxxxxxxx>
Date: Wed, 11 Dec 2002 13:17:28 -0000
While the topic of an OM book is being discussed again, perhaps I could ask
for some more information to add to my OM macro Web site (and the book if it
ever happens).

I am trying to find the years in which some items were introduced.  I have
checked my own receipts, instructions leaflets, booklets and brochures and
found the following dates:

Auto extension tubes - 1981
Telescopic auto tube - 1981

50mm f/2 auto macro - 1985
90mm f/2 auto macro - 1991

20mm f/2 auto macro - 1984
38mm f/2.8 auto macro - 1984
80mm f/4 auto 1:1 macro - 1981

T10 ring flash + T Power control - 1981
T8 ring flash - 1984
T28 macro single flash - 1984
T28 macro twin flash - 1984

Can anyone confirm any earlier years?

The month and year of printing are often present at the bottom of the
instruction leaflets or on the back cover of the instruction manuals, shown
as 4 numbers, e.g. 0781 is July 1981.

Thank you for any help you can provide.

Alan Wood
http://www.alanwood.net (Unicode, special characters, pesticide names)
http://www.alanwood.net/photography/olympus/ (under construction)


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