Nick,
Thanks for the tip to use the Hoya 72 filter.
The max aperture 2.8-3.3 is very impressive, as you have said.
It is half a stop slower at the longer end than 2.8.
The image stabilizer lets me take hand held photos with a 430mm lens. It is amazing.
Maybe "less" is better after all.
What I found on the FZ5:
Announced just before PMA in February 2005, the DMC-FZ5 is one of two direct sucessors to the popular (and dpreview Highly Recommended) DMC-FZ3. Like its predecessor the FZ5 sports a Leica-branded DC Vario-Elmarit zoom with a whopping 12x optical range (35-420mm equiv), though the larger sensor has resulted in a slightly slower F2.8-F3.3 aperture range. It also boasts the same newly-improved optical image stabilization system and the Venus II engine, which, according to Panasonic's documentation, is now equivalent to shooting at 3 or 4 shutter speed steps faster - (the figure for the FZ20 was quoted as 2 or 3 shutter speed steps).
Aside from the boost from 3 to 5 million pixels (bringing it in line with the high-end DMC-FZ20), the FZ5 has a range of relatively minor changes over the FZ3, including longer battery life, a repositioned shutter release and improved grip design, larger LCD screen, orientation sensor and a new fast focus mode, which Panasonic claims gives a 30% improvement on the previous model.
•5.0 million effective pixels
•36 - 432mm (equiv.) F2.8-3.3, 12x Leica DC VARIO-ELMARIT Zoom Lens
•Mega O.I.S (optical image stabilisation)
•1.8-inch colour screen
•New fast focus mode
•Improved battery life
•New orientation sensor
•Venus II image processing engine
•9 scene modes and full photographic control
•TIFF mode
•Ultra-fast startup, focus, shutter lag and shot-to-shot time
•'Simple' mode for novice photographers