Old Flash units with modern DSLRs

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Andy
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Can anyone tell me if any flash units from the old days are compatible with modern day DSLR cameras. The reason I ask, is that I rarely if ever use the on board flash, and would like to make use of any one of the half dozen old hotshoe flashes which I have. I do not just want to put one on the Sony, because of the possible problems which may arise.

Andy
 
have a search

somebody here [cowaski.?] did an article about trigger voltages

could goggle it too,
 
The short answer is yes and no, some are some are not comptable, some of the older flashes have a high trigger voltage, most modern camera can't cope with it and may get fried.
 
As I use 3 old flashes on my Canon I have done a bit of research and certainly for Canon it appears to be a myth that modern DSLR's get fried,its more likeley 1st and second generation DSLR's that have the problem
 
Cheers for that, I will look into it a bit more, and if I get any definite information on the Sony Alpha range, I will post it on that thread.
 
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