Re: Exposure confusion...

> Because it doesn't know there's a big white sheet in the picture - it
> expects everything to average out to grey.  Either give it a stop or two
> of exposure compensation (as you would with a backlit subject) or meter
> close to the subject so the camera doesn't see the backdrop.

Well, I was using averaging, but surprisingly, spot didn't improve this 
particular subject much.  (It's a purple transluscent vase)  A single stop

of overexposure improved the shot.  The result was 1/50 second F 2.7 ISO 
200.  Whites are now white.

Thanks,

KC