  We use semi-automated data acquisition and processing to produce digital
large angle CBED (D-LACBED) patterns. We demonstrate refinements of atomic
coordinates and isotropic Debye-Waller factors for well-known materials using
simulations produced with a neutral, spherical independent atom model. We find
that atomic coordinate refinements in Al2O3 have sub-pm precision and accuracy.
Isotropic DWFs are accurate for Cu, a simple fcc metal, but do not agree with
X-ray measurements of GaAs or Al2O3. This indicates that models of bonding will
be essential to fully interpret D-LACBED data.
