Sony DSC-QX10 Instruction Manual page 30

Notes on using the camera
When you attach a smartphone attachment to the camera, be careful not to
pinch a finger.
On camera's temperature
Your camera and battery may get hot due to continuous use, but it is not a
malfunction.
On the overheat protection
Depending on the camera and battery temperature, you may be unable to
record movies or the power may turn off automatically to protect the camera.
In this case, leave the power offand wait until the camera and battery
temperature goes down. If you turn on the power without letting the camera
and battery cool enough, the power may turn off again or you may be unable
to record movies.