A lens apparatus includes a first optical system, a second optical system, a first focus adjusting unit configured to simultaneously adjust focus of the first optical system and the second optical system, and a second focus adjusting unit configured to adjust a relative shift of focus positions of the first optical system and the second optical system. The first focus adjusting unit is connected to both the first optical system and the second optical system. The second focus adjusting unit is connected to one of the first optical system and the second optical system.