T SettingOn "T," the shutter stays open until the shutter speed dial isrotated to another setting, making the setting ideal for reallylong time exposures. Exposure mode is automatically set toManual. After shutter release, "T" will not cause battery drainregardless of how long the shutter remains open.If "T" exposure is less than 32 sec ., to complete exposure,return mirror to viewing position and advance to next frame,rotate shutter speed dial to any other setting. If "T" exposure is32 sec. or longer, to complete exposure, turn shutter speeddial to any other setting, lightly press shutter release button toreturn mirror to viewing position and advance to next frame.68X Setting"X" setting provides a top flash sync speed of 1/250 sec. withNikon speed lights. For assurance during flash shooting, set theshutter speed dial to "X". To unlock, while pressing the lockrelease button, shift the shutter speed dial to another setting.Speedlight synchronization is also possible for dial-selectedspeeds from 1/250 sec. and slower.