<prompt> High resolution is obtained with:Intraoral films with direct exposureExtraoral films with intensifying screenOPGAll of the above  <response>: Intraoral dental X-ray film is made as a double-emulsion filmthat is, both sides of the base are coated with an emulsion. With a double layer of emulsion, less radiation is required to produce an image. Direct exposure film is used for intraoral examinations, because it provides higher resolution images than screen-film combinations. Some diagnostic tasks, such as detection of incipient caries or early periapical disease, require this higher resolution.Reference: White and Pharoahs Oral Radiology Principles and Interpretation 7th edition page no 64 