While trying to use a rocket blower on it, I accidentally touched it with the blower, leading a massive 1-2 cm scratch on it. This is the white plastic I am talking about and not the mirror. I knew that thing was extremely easy to scratch and I was very careful, but I guess not enough.
Does anyone know if I can replace this myself and if not how much would Canon charge me for it? Or should I take to an authorized Canon repair shop?
I did a quick ebay search and came up with lots of hits for the OEM focus screen:
I know Canon says this screen is not "replaceable" but why the heck do they sell the part for it?