Thanks for your reply. Mine is non-TTL.
What mode would my camera have to be in?
Say, I am using ISO 200 film and the flash shows 3 usable aperture: 16, 11 and 8.
If I choose F/8, my camera aperture must be at f/8 right?
What speed my my camera setting be if it is capable of synching up to 1/250 sec?