South Africa has a minimum sentence of 15 years in prison for murder, although a judge can reduce that in some circumstances.
I think that 15 years imprisonment ought to be imposed as a minimum.
However, the defence argued that there was "no objective served" in sending Pistorius to prison, with his counsel Barry Roux calling for the South African to serve community service rather than time behind bars.
Pistorius and Reeva Steenkamp in 2012.
Prosecutors charged that Pistorius intentionally killed Ms Steenkamp after a fight.
"They have to bear the consequences", said Nel.
Earlier, Reeva Steenkamp's cousin Kim Martin also told the court she did not believe the Athlete's girlfriend loved him.
Walking in court on his stumps while dressed in sportswear emblazoned with the logos of his former sponsor Nike, Pistorius was unsteady at times, holding onto wooden desks and helped by a woman at one point. The Supreme Court of Appeal overturned that decision and upgraded the conviction to murder, meaning a much harsher jail sentence.
The hearing could be the end of long legal battle over Pistorius's 2013 Valentine's Day shooting of Steenkamp. Chief prosecutor Gerrie Nel pointed out on cross-examination that although Pistorius said he could not testify at the hearing because of psychological problems, he did recently give a TV interview.
Roux was trying to show Pistorius was guilty of a "less serious murder", prosecutor Nel said.
Masipa, who initially acquitted Pistorius of murder, will decide the new sentence. He could face up to 15 years in jail. The six-time Paralympic champion has always maintained that he shot the model through a bathroom door because he assumed her to be an intruder.
He said that Pistorius was punishing himself for the rest of his life far more than any court can punish him.
Mr Steenkamp said he had seen "only one photo" of his daughter's murdered body, which was produced in court when Mr Steenkamp was present two years ago, but wanted "the world to see" the others, as a warning about the dangers of firearms.
Oscar Pistorius removed his prosthetic legs in a South African courtroom as part of his defence team's argument that the double-amputee athlete, convicted of murdering girlfriend Reeva Steenkamp, deserves leniency when he is sentenced.
"Besides the obvious anxiety and depression, as a family we'll never ever be able to carry on like normal", she said.
The victim's father, Barry Steenkamp, told the court on Tuesday in an emotional statement that Mr Pistorius should "pay for what he did". She said the photos had been banned to protect the Steenkamp family, who had now agreed to lifting the ban.
He said Pistorius was anxious and freighted when he thought an intruder had entered his home and because he was on his stumps he could not run away due to his disability.