b5: Center-Weighted AreaWhen calculating exposure, center- Optionweighted metering assigns the greatest (.)6 _ 6 mmweighttoacircleinthecenteroftheframe. (.)8 _ 8mm(default)The diameter (d_)of this circle can be set to (.)10 _ 10 mm6,8,10, or13mmortotheaverageofthe (.)13 _13mmentire frame. (.)AvgAverageNote that the diameter is fixed at 8 mm when a non-CPU lens isused, regardless of the setting selected for [Non-CPU lens data] inthe setup menu (pg. 196).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 +I to -I EV in steps of I/6 EV.1 Select Custom Setting b6.Highlight Custom Setting b6([Fine tune optimal exposure])and press I_.277