Minolta Company, Ltd.

Tatsuo Nakashima

Hiroshi Ueda

Tsuyoshi Kishimoto

Akio Kinba

Junko Nagahata

Where a person is being photographed, for example, both light from the person located at closer range and light from the background located farther away enter the photodetector elements. Where the contrast of the background is high, the rate at which the information from the background contributes to the focus detection becomes larger, which hinders accurate focus detection with regard to the person. In this case, the focus detection device divides a predetermined focus area into smaller areas and detects focus condition in each smaller area.

Growing community of inventors

Matsubara, Japan

Tatsuo Nakashima