If you have an older "legacy" flash, like the Olympus T32 or T20, you can safely use these flashes on the OM-D and feel safe doing so. You will not get TTL, but can shoot in "M" (manual) with decent results.. plus the T32 Olympus flash seems quite powerful. I purchased the SMDV-512 Hot Shoe Safe Sync adapter from Photodiox: I'm not a big "strobe" person, and today I just messed around in the house trying to get a feel on how well this will work. Flipping the flash head up towards a white ceiling I was able to get decent results, and will probably do better once I research how best to use this setup. If anyone has pointers with using legacy flashes with the OM-D- please share them.