under water
Contributor
CheddarChick, Your DS51 should work in manual mode with the Oly cameras if you get this converter.
4401 Ikelite Fiber Optic Adapter for DS Substrobes
Fiber Optic Adapter for DS Substrobes
However, If I were you, I would sell the Ike strobe and go with one that does not rely on getting it's TTL from an Ikelite housing or converter. The small Inon S2000 has much better coverage and output than the DS-51. That is what I did, sell my DS-51 and DS-160 and get a pair of S2000's and now I have better coverage, battery life and TTL.
4401 Ikelite Fiber Optic Adapter for DS Substrobes
Fiber Optic Adapter for DS Substrobes
However, If I were you, I would sell the Ike strobe and go with one that does not rely on getting it's TTL from an Ikelite housing or converter. The small Inon S2000 has much better coverage and output than the DS-51. That is what I did, sell my DS-51 and DS-160 and get a pair of S2000's and now I have better coverage, battery life and TTL.