The three films are precisely tailored to the respective display; the instructions for applying is very helpful. That three films are included in the delivery, turns out to be a blessing, because the first one has to, if you're unlucky, write off as a test run: It is difficult to prevent with all care that one or two grains of dust between the film and display terminals. This results in air bubbles, which can no longer be removed. Dust-free air pockets, however, are easy to force out the sides. The supplied cleaning cloth and the cards for pressing the film are a useful addition, and with a clean, very soft brush to remove dust and with a little skill and patience succeeded the second attempt but then ... a highly recommended protection of the display, which without film fast times scratched. Impairments in brightness, contrast or brilliance I can not determine.
