316Ub5: Center-Weighted AreaNote that unless [Average] is selected, the diameter is fixed at12 mm when a non-CPU lens is used, regardless of the settingselected for [Non-CPU lens data] in the setup menu (pg. 218).When [Average] is selected, the average of the entire frame will beused for both CPU and non-CPU lenses.b6: Fine Tune Optimal ExposureUse this option to fine-tune the exposure value selected by thecamera. Exposure can be fine tuned separately for each meteringmethod by from +1 to –1 EV in steps of 1 / 6 EV.1 Select Custom Setting b6.Highlight Custom Setting b6([Fine tune optimal exposure])and press 2.2 Select [Yes].The message shown at rightwill be displayed; highlight[Yes] and press 2 to proceed,or select [No] to exit withoutaltering exposure.When calculating exposure, center-weighted metering assigns the greatestweight to a circle in the center of the frame.The diameter (φ ) of this circle can be set to8, 12, 15, or 20 mm or to the average of theentire frame.OptionL φ 8 mmM φ 12 mm (default)N φ 15 mmO φ 20 mmP Average
