In article , Daniel Silevitch wrote:
I wonder if a step-up ring 55 to 58mm would be a good solution, or
would there be some image quality issues? Maybe the filters would
work the same, but I am not sure about the conversion lenses. I
think they get designed with the camera's sensor and existing lens
in mind.

My guess is that a step-up ring would work fine for the filters, but
that the lenses would be different enough to make the converters
problematic. The FZ5 and FZ20 both ship with hoods standard, and I can't
imagine that that will change for the 30.

Panasonic will sell wide and tele converters for the 30, and I imagine
that 3rd parties will eventually do the same. No macro converter that I
know of, so you'd be limited to the inherent macro capabilities of the
main lens.

There is useful information about using conversion lenses on the FZ series
of cameras he
http://www.cs.mtu.edu/~shene/DigiCam...-10/index.html

Closeup adapters can also be used for macro work.