In message , Simon
wrote
Hello -

I'm looking for a solar panel or panels to supply up to 0.5A at around 6V
(for powering a small IP camera), preferably with built-in regulation, for
permanent installation outdoors.

If your proposed system hasn't got a battery acting as a reservoir the
panel will have to supply your volts/amps under the worst case daytime
weather conditions. The panel will have a quoted output with a certain
input light level.

This means that you proposed system may require a panel with a better
specification or running a panel capable of a higher voltage output with
a regulator.

--
Alan