I have a a screen protector I bought at Walmart on my iPad. It is just one of those regular kinds without any of the liquid you spray on it first.
I do notice a little loss in quality with the screen protector on. I can't quite explain it. It is like the screen is more pixelated maybe. But it isn't blurry at all. I can't explain it unless if you actually see it. It hasn't necessarily lost any sharpness, but the screen protector isn't totally invisible.
My question is if there is a screen protector out there that is totally invisible on the screen, meaning no loss in quality. I know that invisible shield by Zagg is one of the most popular, but I don't want to spend $30 on one if it is just going to be the same. I don't know if all screen protectors are like that or not.