Here’s some more on the same topic:

Revamping Va.'s Police Lineups - New Methods Urged To Curb Mistakes
By Karin Brulliard, March 6, 2005, The Washington Post

Two Norfolk women were raped in 1981, and when police showed them suspect lineups, each picked out Arthur Lee Whitfield and insisted that he was the attacker.

Whitfield was convicted of one of the rapes -- which occurred within an hour of each other -- despite testimony that he was at a birthday party when they occurred. He took a plea deal in the second rape and was sent to prison. Then, last August, DNA proved the women were wrong, and Whitfield was freed after 22 years behind bars.

There is a reason many innocent people such as Whitfield are sent to prison, experts say: police lineups.

Mistaken identification by eyewitnesses was a factor in nearly 90 percent of the nation's first 70 convictions overturned by DNA testing, according to the New York-based Innocence Project, which works to free the wrongly convicted. [snip]

There’s a lot more at the link, but note the point in the paragraph above. 90% of the overturned convictions were based on faulty eyewitness identifications.

I recall reading another WashPost column a number of years ago written by a woman who had been a rape victim. She was sure that she had identified her attacker correctly. After all, he had been face to face with her several times in a two-hour period. She swore to herself that she would never forget his face. When she saw him in the lineup, she was sure. This was the man!

He went to prison for a long time, despite alibi witnesses and protestations of innocence. Years later, DNA proved him innocent and another man guilty. The victim was writing the column, she said, to beg forgiveness from the man she accused, but at the same time, she she still couldn’t believe she was mistaken. How could she have been? She had memorized his features. Nonetheless, DNA does not lie. Go figure.