Nikon D5 100th Anniversary Edition User Manual - Page 166

A Metered Area In spot metering, exposure will be locked at the value metered at the selected focus point (0 129). In center-weighted metering, exposure will be locked at the value metered in a 12-mm circle in the center of the viewfinder. A Adjusting Shutter Speed and Aperture While exposure lock is in effect, the following settings can be adjusted without altering the metered value for exposure: Exposure mode P S A Setting Shutter speed and aperture (flexible program; 0 133) Shutter speed Aperture The new values can be confirmed in the viewfinder and top control panel. Note that the metering method can not be changed while exposure lock is in effect. A See Also If On (half press) is selected for Custom Setting c1 (Shutter-release button AE-L, 0 336), exposure will lock when the shutter-release button is pressed halfway. Z 142