Hi Paul, The Vivitar 90/2.5 S1 doesn`t have a tripod ring, but there is one the 1:1 adapter, when coupled to the lens it comes in handy. Steve Larson Redondo Beach, California ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, July 14, 2002 6:53 PM Subject: Re: Tamron 90mm/2.5 macro
> Jeff wrote: > As far as I can recall, the VS1 is a much larger lens. Some members have > suggested that it was manufactured by Kiron. > > Jeff, > The Vivitar Series 1 90/2.5 macro (8 elements in 7 groups, floating-element > design) and matching 1:1 adapter (3 elements in 3 groups) were made by > Tokina, which later introduced its own 90/2.5 macro and 1:1 adapter of the > same optical formula. The Vivitar has a tripod ring; the Tokina version > omitted the ring but added the PKA setting and may have added internal > baffling to solve a flare problem that was said to affect the Vivitar at > nonmacro distances, according to the Nikon and Olympus discussion sites. > > The Vivitar Series 1 105/2.5 (1:1) was optically the same as the Kiron > 105/2.8 (6 elements in 6 groups). Both were made by Kino Precision Optical. > These twins were also optically the same as the Vivitar 100/2.8 1:1 macro > that was not marketed as Series 1. > > [EMAIL PROTECTED] > > -------------------------------------------------------------------- > mail2web - Check your email from the web at > http://mail2web.com/ . > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
