Kodak DCS500 - Manual (Page 167)

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5 Aim the FE Lock focusing point where you want to obtain the correct flash exposure
reading, then press the FE Lock button. FEL appears briefly in the data display under
the picture area, and the focusing point linked to the FE Lock flashes in red.
The FE Lock links to the focusing point as follows:
Choice of Focusing Points for FE Lock operation
Custom Function
setting/Focusing Point
selection method CF 13-0 CF 13-1
Automatic focusing
point selection Center only Center only
Manual focusing point
selection Center only Selected AF frame
FE lock indicator
FE lock exposure value
Current background exposure
level (This value will vary
according to the light level.)