The evidence consists of enhanced images of Travis Alexander just before he was stabbed and shot to death.
Arias took several photographs of Alexander before he was killed in 2008. A defense expert claims that he can see a reflection of a person in the eye of Alexander in one digitally enhanced image. Defense lawyer Kirk Nurmi says the image shows Arias with both hands on the camera - and not holding a knife that she used to kill Alexander.
Prosecutor Juan Martinez denounced the interpretation as "fantastical" and "voodoo."
The judge said she would rule later on whether to allow the images.
A producer from the CNN family of networks was called to the stand when proceedings began at 9:30 a.m. Monday.
Alyce LaViolette, a psychotherapist and domestic violence expert who said Arias was a victim of domestic violence, is expected to be back on the stand Tuesday.
The prosecution maintains Arias killed her ex-lover, Travis Alexander, in a jealous rage in June 2008. His body was found stabbed 27 times, his throat slit and a gunshot wound to the head.
Arias claims she killed Alexander in self-defense.
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Copyright 2013 CBS 5 (KPHO Broadcasting Corporation). All rights reserved. The Associated Press contributed to this report.
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