To provide an electronic apparatus which performs projection of an image in a maximum projection size that can maintain excellent image quality.

An electronic apparatus includes a projection unit 34 for projecting a projection image onto a projection plane, a measurement unit 36 for measuring a distance from the projection unit to the projection plane, a detection unit 20 for detecting optical characteristics of the projection plane, a storage unit 31 for storing projection performance of the projection unit, and a determination unit 20 for determining a maximum projection size in the projection plane based on the distance to the projection plane, the optical characteristics of the projection plane, and the projection performance of the projection unit.