“To get the best out of the FZ48 it really needs to be kept at ISO 100 or ISO 200.”
TrustedReviews has posted their review of the Panasonic Lumix DMC-FZ47 / FZ48 with 12.1MP resolution (on a 1/2.33-in. CCD), 24x ultra wide-angle optical zoom (25-600mm equiv.), Optical Image Stabilization, 3.0-in. (460k-dot) LCD, Intelligent AUTO (iA) mode, PASM, Scene Modes, Continuous Shooting 11fps at full resolution, and Full HD 1920×1080/60i movies in AVCHD format and stereo sound.
You can read the Panasonic FZ47 / FZ48 Review @ TrustedReviews.