Adjusting the contrast (contrast), Adjusting the black level of an image (brightness), N, see “using the menu – Sony SDM-M81 User Manual

Adjusting the contrast (contrast), Adjusting the black level of an image (brightness), N, see “using the menu | See “using the menu, M(+)/m(–), and ok buttons” on | Sony SDM-M81 User Manual | Page 12 / 104