Although Canon does not recommend putting protection on the screen as this may cause a sensitivity problem, I see no difference when I use the touch screen. The kit also contains a protection for the LCD located on the top of the unit. Protections are slightly smaller than the screens. So we feel it is not fully adapted but on the other hand it makes the installation much easier. And once installed, you do not notice this difference in size. Would recommend, especially if, like me, you forget to turn from time to time your screen 70D when you put your phone.