A lighting apparatus includes a power supply circuit, a light-emitting unit, a mounting unit, and a lighting-side controller. The light-emitting unit is configured to drive light emission based on a power supply voltage generated by the power supply circuit. The mounting unit is configured to detachably mount an electronic apparatus including an apparatus-side controller and an apparatus function unit controlled by the apparatus-side controller. The lighting-side controller is configured to perform control to supply an operating voltage based on the power supply voltage to the apparatus-side controller of the electronic apparatus mounted to the mounting unit to perform authentication processing with the apparatus-side controller, and perform, based on a result of the authentication processing, control to supply the operating voltage based on the power supply voltage to the apparatus function unit.