"The accused had reasonable time to reflect, to think and conduct himself reasonably.
"The accused knew that there was a person behind the door, he chose to use a firearm which was a lethal weapon, was competent in the use of firearms as he had received training," she said.
The judge also took time to reject the defence arguments that Mr Pistorius is more likely to confront danger because of his disability - both his legs have been amputated.
"Vulnerability is not unique - There are many people in this country without any form of security at all," she said. [Emphasis mine]