> 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
Autumn 1980
> Telescopic auto tube - 1981
Autumn 1980
> 80mm f/4 auto 1:1 macro - 1981
Autumn 1980
> T10 ring flash + T Power control - 1981
Autumn 1980
> 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.
All these units plus the 135/4.5 macro, 80mm close up lens, ring cross POL
filter, 6V power pack 2, and AC adapter 3 were introduced at the same time.
They were introduced in the brochure C86E-380D (New Units, Macro). I may
have dates for the other equipment, I'll have to dig through my pile of
documentation and see if there's anything.
-mark
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