Archived posting to the Leica Users Group, 1993/01/27

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Subject: Zeiss Topogon 25/4 info wanted.
From: UMSU Photo Club (Wilson Li 6508751) <photocb@ccu.UManitoba.CA>
Date: Thu, 28 Jan 93 0:17:10 CST

	Re:  Info on Zeiss Topogon 25mm f4 lens for Contax RF

		Can anyone help? I want to know when this lens was 
	made, who/which Zeiss plant made it and the quantity made. 
	I will appreciate any information regarding this lens.

		One source that may have such info: Contax RF
	Hove book, believed out of print by now.  Couldn't locate
	a copy for the last six years.  Anyone can help?
		This lens is for 35mm RF Contax cameras, comes with 
	an optical viewfinder.

		Further, anyone can enlighten me: What does Opton
	marked on some Zeiss lenses mean?  Is Opton the name of a 
	town, or is it the name of a Zeiss plant?  Or something else?

		From: Dom Kwok