On Tue, 2010-08-31 at 13:15 -0400, Hailiang Zhang wrote: > Is the difference > between mFo and Fo maps supposed to be very small?
For an essentially correct model, yes. The major advantage of (2mFo-DFc) maps is suppression of model bias, so if you don't see much difference then your model is very well refined. For illustration, introduce a systematic error on purpose and see which map gives you better result. -- "I'd jump in myself, if I weren't so good at whistling." Julian, King of Lemurs