The photo quality from the Panasonic Lumix DMC-FX90 is very good as long as you have plenty of light and can keep the ISO sensitivity set at or below ISO 200. As soon as you get above that, the color noise starts to make things look mottled with yellow blotches. Plus, the noise reduction makes subjects look very soft. If you're after great handheld indoor and low-light shots without using a flash, you'll probably want to skip the FX90. That's especially true if you want to use the photos at larger sizes or heavily crop them.
If you like to shoot close-ups, the FX90 does very well. Again, though, that's dependent on keeping the ISO set below ISO 200. The FX90 can focus as closely as 1.2 inches from a subject, and when you enlarge photos you can get sharp results with good fine details.
Panasonic usually corrects for barrel distortion with in-camera processing, but it seems to have skipped that for the FX90. As you can see in the top shot, there is some very noticeable barrel distortion. With the lens extended, there's a bit of pincushioning, but it's barely visible. The center sharpness is good from the Leica lens, but it gets softer out to the sides. The left side was particularly soft on my review camera.
One of the downsides to using a CCD sensor is smear caused by bright light hitting the sensor. If you look at the sunlight bouncing off the building in the distance, you can see vertical lines shooting up and down from the bright spot.