EVG:Is both a green-sensitive, high-contrast, zero-crossover film and a 400-speed system when used with either EV screens or LANEX Regular Screens.T-MAT L/RA:Provides wide latitude for capturing detailed images of facial profile soft tissue as well as bone and tooth structure. This film acts as a 400-speed system when used with LANEX Regular Screens.T-MAT G/RA:The standard for extraoral film in the industry, T-MAT G/RA is a green-sensitive, high-contrast, 400-speed system when used with LANEX Regular or EV Screens.T-MAT H/RA:Provides high-contrast images with very short exposure times. Excellent for capturing images quickly, T-MAT H/RA is an 800-speed system when used with LANEX Regular Screens. When used in the double-load mode to create 2 identical radiographs with a single exposure, it acts as a 400-speed system with LANEX Regular Screens.