169rViewfinder Photography1 Light a reference object.Place a neutral gray or white object under the lighting that willbe used in the final photograph. In studio settings, a standardgray panel can be used as a reference object. Note thatexposure is automatically increased by 1 EV when measuringwhite balance; in exposure mode M, adjust exposure so thatthe exposure indicator shows ±0 (0 137).2 Set white balance to L (Preset manual).Press the U button and rotate the main command dial untilL is displayed in the rear control panel.U button Main command dial Rear control panelA Measuring Preset Manual White Balance (ViewfinderPhotography)Preset manual white balance can not be measured while you areshooting an HDR photograph (0 189) or multiple exposure (0 227), orif Record movies is selected for Custom Setting g1 (Custom controlassignment) > Shutter-release button (0 307) and the live viewselector is rotated to 1 during live view.