Before revision:  In addition to increasing the detective quantum efficiency with which images can be recorded , acquisition of DDD movies during exposures allows for correction of movement of the specimen, due both to instabilities in the specimen stage of the microscope and electron beam-induced movement.
After revision:  In addition to increasing the detective quantum efficiency with which images can be recorded , acquisition of DDD movies during exposures allows for correction of movement of the specimen, due both to instabilities in the microscope specimen stage and electron beam-induced movement.