Roger,
Olympus has always made fabulous lenses, and this one is a good example.
Here I do like the colored globes produced in the OOF b.g. I would caution against using that lid to elevate the closest object in your composition, unless that is essential to the meaning of the picture, in some way. Right now, it calls attention to itself as a prop.
I would love to see more tests with flowers! Then it's just a matter of dropping your shooting height and checking for the right illumination of the b.g.
Asher