This original Canon A-1 focus screen is a must-have for anyone looking to replace or upgrade their camera's focus screen. Designed to fit Canon A-1 cameras, this rectangular focus screen is fastened by slipping it into place. With its slip-in fastening and compatibility with Canon A-1 cameras, this focus screen is a reliable replacement or upgrade option for anyone looking for a sharper or clearer image. Made in Japan in the 1970s, this unit is a great addition to any photography enthusiast's collection.