NEX-3, NEX-3N, NEX-C3, NEX-F3, 

NEX-5, NEX-5N, NEX-5R, NEX-5T, 

NEX-6, NEX-7

a3000, 


Menu -> Setup -> Release w/o Lens -> Enable


a3500,


Menu -> Shooting Settings -> Release w/o Lens -> Enable


a5000, a5100, 

a6000, a6300,


a7, a7R, a7S, a7 II, a7R II, a7S II,  


Menu -> Custom Settings -> Release w/o Lens -> Enable


a6400, a6500,

a7 III, a7R III, a9:


Menu -> Camera Settings 2 -> Release w/o Lens -> Enable