Ettl is not guaranteed to work on nex if the flash is not Sony . This is usually the case. But you can still fire them manually . If you badly need a flash . U can try the manual yongnuo . Cheap and does the job effectively , provided we know what to do with manual flashes .
The older Minolta /Sony mount flashes would require an adapter to work on the newer bodies like a99 and nex6 . For peeps who bought the a99 , the adapter is part of the package.
For peeps who used to own the Minolta to iso show mount converter . U may try to mount it on the nex6 . I would suspect it will still fire off the flash but may be without ttl
The older Minolta /Sony mount flashes would require an adapter to work on the newer bodies like a99 and nex6 . For peeps who bought the a99 , the adapter is part of the package.
For peeps who used to own the Minolta to iso show mount converter . U may try to mount it on the nex6 . I would suspect it will still fire off the flash but may be without ttl