Paul Furman wrote:

K W Hart wrote:
You don't specify the focal length of the zoom lens.

I would guess something like 75-150mm f/4 based on the vintage. At the
teleconverter to this for 150-300mm f/6.3.

f/8 surely with a 2x teleconverter?
--
Alex Monro
Exeter, UK
Running on Linux (Kubuntu 10.04)