I bought my LB2.0 originally for my 5D but now am shooting a lot with 2 m4/3rds bodies. I'm using an EOS to m4/3rds adaptor which allows me to use my old LB, but am thinking of buying the Composer so I can add the FE optic. However--having the FOV relevant to a 35mm FF be 100mm puts me off. Its not a FOV that appeals to me too much. I'm not sure adding the WA converter will do much for me. I have it, the tele, and 2 closeup lenses for the 2.0, and while it gives me a FOV I like better, I surely would like about a 50mm. Guess that won't happen--and of course those with 1.5, 1.6 crop bodies have a similar issue.
The answer would be to buy the EF mount and shoot with my 5D--but the liveview on the G1 and GF1 is so terrific for LB shooting--ah, well. I don't expect any good answers--but perhaps those that are shooting with 4/3rds bodies can give me their opinions of it.
I did, however, see a terrific video by Mike Kobal using the FE (along with 2 other lenses)
[www.mikekobal.com]
Diane