Andrew B. Paddock, 76, a retired film processor who had worked at Byron Motion Pictures in Washington, died Feb. 23 at his home in Burbank, Calif.

He had leukemia, his daughter Karen Lydon said.

Andrew Billings Paddock Jr. was born in Stockholm, where his father was working for General Motors. The younger Mr. Paddock moved to Virginia as a child and attended Washington-Lee High School in Arlington.

From 1953 to 1980, he worked as a film processor at the now-defunct Byron Motion Pictures, a film laboratory that produced movies and commercials for private businesses and government agencies. He then moved to Burbank and worked as a film technician until he retired in 2012.

Mr. Paddock played bass and guitar with the Witcher Brothers, a California bluegrass band, and belonged to organizations including the International Bluegrass Music Association.

His marriage to Mina Cook ended in divorce. Survivors include four children, Kirk Paddock of Deale, Md., Kathy Kramer and Kris Paddock, both of Upper Marlboro, and Karen Lydon of White Plains, Md.; a brother; four grandchildren; and two great-grandchildren.

— Megan McDonough