Al Jazeera footage showed Israeli troops firing on a cameraman,Imad Ranem, and being shot again twice while he was lying on the ground, with his camera fallen beside him.
Medical sources in Gaza reported that both his legs had later been amputated and he is in critical condition.
Israeli soldiers also fired on a rooftop where several journalists, including a Reuters camera crew, were filming. No one was injured.
During Thursday's raid, Azmi Abu Dalal, a Palestinian ambulance worker, said Israeli forces seized him and several colleagues and used them as "human shields" to exit the area.
Israeli law bans soldiers from using civilians for protection.