I tested 3 Panasonic FZ10 cameras and noticed discolored lines on light objects (on all 3 cameras).
This problem is very annoying while taking foto of clouds (or sunsets) with +1 or +2 EV ( in this case all white clouds/sun or even light background comes with discolored lines).
Samples of this are here:
Click on images to see it in full size.
or here (not a direct link)
(lines in the sky)
(lines on the sun)
This problem is known and showed in this review
"The light areas of the FZ10's images are especially susceptible to demosaicing artifacts. Here, the error takes the form of discolored stripes"
Is there any way to solve this problem?
(i think, this is jpeg compression problem, that can be solved by firmware upgrade)