The Vivitar Series 1 70-21mm/3,5 is a big and heavy zoom with a superb optical quality, which is my favourite telezoom.
I often use it wide open for freehand macro shots. The focussing in the macro position is done by sliding the zoom ring back and forth, which is very good for holding the camera steady. I own the lens with M42 mount and use it with the Chinon CE-II Memotron, which makes a really heavy combo.







