I have a Nikon D3200 and an old Yahica Branded Flash that came with an old Zenit ET. I searched for the instructions for using old flashes with new cameras and found out that excessive voltages could fry my (new digital) camera circuits.
Hence, I tried to look for the model of my Yashica branded flash, but couldn't find it. So I am not sure how much voltage it requires.
What I need to know is the voltage that this flash requires to fire up. If it is something that my Nikon D3200 could handle, I will use it, otherwise NO.
How can I determine the voltage when I don't have any metering device?