Shelly Korycinski wrote in article <343681A4.6F0EF8BE@soleil.acomp.usf.edu>...

> Anyone ever had any luck (good or bad) using the vivitar 2X macro
> focusing teleconverter?
> Seems like a good price compared to the Nikon brand. (will be used for
> a Nikon system)

It is a good converter, similar in performance to the Nikkor TC200/201,
though with the added macro facility and lower price. It, and many
other lenses, are listed in my "SUBJECTIVE Lens Evaluations
(Mostly Nikkors)" on my web page under "I babble".
Hope This Helps
David Ruether - http://www.fcinet.com/ruether