installation is very simple, exactly the dimensions of the 550D's screen, so no adhesive bubble is a mini glass / ice (more fingerprints but mist that dissipates quickly). remember to remove small dust with a suitable soft cloth before pasting. I recommend buying this protection when you purchase your reflex to always keep the new lcd screen without scratches. it is more neutral aesthetic, 0.5 thick, retransmission details looks better, I feel it a little zoom, no problem for brightness (which can be set in menu) GOOD BUY-
