> Even in M mode, change your ISO setting manually from the DX reading
> of
> 400 to 250.
> Then Compensate exposure 2/3 to 1 stop indoors. 
> So, I put film in camera.  The camera reads DX at 400.  I amnually
> set
> to ISO250.
> 
> I set M mode to 1/60 at F8.  If a bride with white I set flash
> compensation + 2./3 stops so the flash now pumps out more light. 
> This
> compensates for the Flash metering whcih is trying to make the white
> dress gray. So in essence it is pumping out less light since white
> refelects more light and the camera is trying to make it (with flash)
> gray.  I add about 2/3 to 1 stop more flash output to make white look
> white. Simple.
> 
> BTW, I purposely rate 400 neg films ISO250 which adds a 2/3 stop
> safety
> factor in case the camera inetnionally underexposes by say 1 stop.
> Doing this I am only 1/3 stop under and within the latitude of print
> film.  This has savemy neck a few times.
> 
> Peter K

Peter, this is exactly what I meant: bearing in mind ETTL's AF point
biasing, I wouldn't put the sensor onto the wtite/black pattern, but
rather on subject's face.
Putting it on white, the ETTL would give be heavily weighted to this
tone and indeed will underexpose, however, regular "caucasian" face
tone is much closer to 18% gray, though theoretically still may require
about 1/3 - half stop compensation in certain situation. 
This is my opinion. What would you say ?

Alex


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