Can I Use my very old Vivitar Auto Thyristor 3700 Flash with my DSLR Nikon D3100?


Nikon is supposed to be 250 volts for their circuit and the Vivitar 3700 has been measured around 9 volts from a few different sources, so in theory the answer is yes. Having said that, there's really very little reason to use such an old flash, you're much better off getting a modern flash from Nikon that you can control properly from the camera body rather than risking a faulty circuit in an old flash and damaging your camera.


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