I've seen a few lenses like that with a front element adjuster ring for
macro use, usually on a 135mm with labels like Sears, etc. Might have been
made by Sigma.
Lex
From: "Tom Trottier" <TomATrottier@xxxxxxxx>
Hi Lex,
Found, on ebay, a NOS (new old stock) 135mm Sigma XQ macro for
Olympus. It's a curious beast - the front lens screws out further to
give 1:3 ratio, probably by reducing focal length. 4 lenses in
separate groups. Scales for subject area dimensions down to 1:12
somewhat poorly attached.
Time to do some testing.
Tom
At 2000 June 16 - Friday 9:42, Lex Jenkins <olympus@xxxxxxxxxxxxxxx>
spoke about *Re: [OM] 135mm lens...what to buy?...* saying
> Hey, Tom, great minds think alike. I've already been using the 135mm
> Lentar as a pseudo-macro in conjunction with a homebrewed extension
> tube (formerly a 2x teleconverter, with the mediocre optics tossed).
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