Also comes from China - but very good

Purchase occasion was - to miss a regular protective display - just like any other well. Even though I care Bypass with my cameras, sometime you do not fit it on and then annoys you because the stain no longer goes away.

As often written here: It is important that you work in a clean environment and is going exactly as directed. In particular, no lens but only the normal cap of the housing should be mounted. I have the display before installation prepared with a cleaner for glasses, the antistatic effect. This continues throughout further work not so easy dust.
As the screen protector is working very accurately, one must make sure that it is aligned really exactly at the edges during installation. If it does not work - it recognized that the adhesion effect only partially formed - can with a lot of feeling (!!!!!) of protection are again slightly raised and realigned. Optical losses due to the display I could not tell.
The bonus - the screen protector on the Info display on the top is ok, but in my opinion not absolutely necessary.

What I have a point deducted? For in my opinion, far too expensive packaging that gives back a lot of unnecessary plastic waste.

Otherwise I can recommend the full screen protection.