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- brightnessValue type Property.
- brightnessValue comment "The value of brightness. The unit is the APEX value. Ordinarily it is given in the range of -99.99 to 99.99. Note that if the numerator of the recorded value is FFFFFFFF.H, Unknown shall be indicated.".
- brightnessValue comment "画像撮影時の撮影対象物の明るさ（APEX値）。EVにするにはISO感度の値を足す必要があり、Ev:Exposure, Bv:BrightnessValue, Sv:SensitivityValueとしてEv=Bv+Sv Sv=log^2(ISOSpeedRating/3.125)という計算式を使う。ISO感度100の場合Sv=5、ISO200の場合Sv=6、ISO125ではSv=5.32".
- brightnessValue label "BrightnessValue".
- brightnessValue subPropertyOf pictTaking.
- brightnessValue tagNumber "37379".