As far as I know, the 30 minute limitation applies only to cameras imported to Europe. It is a tax law restriction.
At http://reviews.cnet.com/digital-cameras/sony-alpha-nex-5n/4505-6501_7-34999110.html?tag=nl.e404#reviewPage1
The reviewer writes:"I shot up to the full possible clip length indoors--for legal reasons, it (like all cameras) maxes out at just under 30 minutes"What exactly does this mean? There's a *law* that controls how long you can operate a camera continuously?
A reference link would be appropriate when making such a statement. In its absence, does anyone know what she's talking about? Is it U.S. specific or a common legal infringement globally?

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