Paul Howell
Subscriber
From Wiki concerning the 70 to 210 macro S1
The Vivitar Series 1 70-210mm f/3.5 VMC Macro Focusing Zoom lens was designed for and marketed by Ponder & Best (later Vivitar) in the 1970s. It was the first Vivitar Series 1 lens and was considered revolutionary for its time. Among other innovations, it is notable as the first macro focusing zoom lens. Its patented ability to switch into macro mode was eventually adopted by nearly every major camera and lens manufacturer in the world.
Vivitar's specifications were turned into a lens design by optical engineer Ellis Betensky of Stamford, CT. Betensky had developed an early auto-optimizing optical design program that he ran on a mainframe computer owned by Perkin Elmer. Betensky's design was then manufactured by Kino Precision.
The Vivitar Series 1 70-210mm f/3.5 VMC Macro Focusing Zoom lens was designed for and marketed by Ponder & Best (later Vivitar) in the 1970s. It was the first Vivitar Series 1 lens and was considered revolutionary for its time. Among other innovations, it is notable as the first macro focusing zoom lens. Its patented ability to switch into macro mode was eventually adopted by nearly every major camera and lens manufacturer in the world.
Vivitar's specifications were turned into a lens design by optical engineer Ellis Betensky of Stamford, CT. Betensky had developed an early auto-optimizing optical design program that he ran on a mainframe computer owned by Perkin Elmer. Betensky's design was then manufactured by Kino Precision.