I've shot for hours in the sun in up to 90 F without issues in Sony HDV and Canon DV cams.
One week I ran media for a summer camp with 80 F heat, but near 90% humidity and it shut down the tape transport on all of our cameras. Except the Sony A1U, but that one later died of a creeping corrosion from moisture damage...
-- Meteor Tower Films
We make music videos, design video for live theater, and build interesting contraptions.