When Dr. Hoffman first tries to find Barnabas in his house, Willie is wearing jeans and a shirt. As they first begin to go downstairs, Willie is wearing pajamas and a bathrobe. As they go down further, Willie is back to wearing jeans and a shirt.
When Dr Hoffman first appears in her workshop/lab there are clearly lenses in her glasses. Lights reflect off them as she takes vials from the refrigerator, and the lampshade behind her is refracted through them as she sits in front of the microscope. However, in the ensuing closeups the lenses are clearly missing.
When the Police park in front of the barn they pull up with one car on the left and the second stops in line with the wagon wheel. They all get out of the cars and go search for Daphne. She is found and all of the officers surround her. Cut to the exterior and the professor pulls up into the same spot that the Police cruiser had been parked in. Not sure how the car got moved when all of the officers were searching and then were shown in the barn.
Dr. Hoffman's big-rimmed glasses quite obviously have no lenses.