You can also change the camera nickname on the screen in step 1-B-2. To disable NFC connections, choose MENU > [ 4] tab > [Wireless settings] > [Wi-Fi Settings] > [NFC] > [Off].
Confirm the Custom Functions Setting If the [Release shutter w/o lens] option in the [Custom Function] menu is set to [ Disable ], the shutter will not be released if a lens is not attached. To release the shutter when a lens is not attached, please set the [Release shutter without lens] option in the [Custom Function] menu to [Enable] using the following procedure.