A perverted Adelaide chiropractor who secretly filmed hundreds of his clients lacks an understanding of his crimes and cannot be effectively treated, a forensic psychiatrist says.
Peter Wayne Snodgrass has admitted to more than 200 charges, including filming patients on cameras hidden in a pen and alarm clock, between 2012 and 2017.
Psychiatrist Dr Owen Haeney interviewed Snodgrass extensively and said he had offered "incomplete explanations" for his actions.
"My overall impression after meeting with Mr Snodgrass was that there was still not a full understanding of why he had done what he had done," he told the Supreme Court on Monday.
"Without identifying what the underlying problem is, he can't hope to engage in meaningful treatment."
He said, at one point, Snodgrass, 52, had explained his violation of patients as "wanting to see their boobs and bums".
Dr Haeney also said Snodgrass had offered up a "slightly over-enthusiastic" description of prison life.
"He enjoyed the fresh air, the space... visits from his family," he said.
The psychiatrist added that Snodgrass presented as remorseful, but was more concerned by the impact of his crimes on himself than the welfare of his victims.
The court has heard Snodgrass, whose victims ranged in age from 11 to 60, has admitted to investigators that he was addicted to sex.
Giving evidence last month, he said he would download the material to a computer hard drive and give each file a name, sometimes related to the physical appearance of his victims.
His offending began in 2010 when he took an initial image with his phone of a woman he was massaging at the time.
He later bought a camera hidden inside a pen before replacing that with the clock which he set up in a change room area.
In a victim impact statement previously read to the court, one woman described his offending as "calculated, planned and repetitive".
"What gives you the right to prey on women for your own gratification," she said.
Snodgrass has read his victims a letter of apology, blaming years of unresolved grief and trauma for his crimes.
"I made a terrible mistake in getting lost in the world of pornography and sexual gratification to numb out my emotional pain," he said.
"I will never take what I've done lightly ... it makes me feel sick and self-repugnant."
Justice Anne Bampton will sentence him at a later date.