On August 21, 2019 at 02:17, Mario said...
Depending on distance.
I would use any quality regulated power supply. Yes, AD! is fine.
An unregulated power supply outputs its rated voltage when its rated current is being drawn. When less is drawn, the output voltage can be as high as 17 volts (12V times the square root of 2).
A regulated supply outputs its rated voltage at any current output up to the maximum rated current. Above that current level it malfunctions, outputs less than design voltage, or fails.
Why does this matter? I have no fact to cite about cameras except that they're designed to work at a particular voltage... but some 12V Xantech equipment can lock up if run on a 12V unregulated supply.