Rendering:
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The filter is well cut (apparently the laser). However, you have to be really accurate when fitting if a portion of your screen will not be covered. It is played almost 2mm. Indeed, it does not cover 100% of the screen, perhaps to avoid a manipulation takes off one of the edges. The filter does not protect the front camera.
Effectiveness:
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The promise of 0 reflection is respected! It is the day and night. The filter also has the advantage of becoming anti-finger trace.
However, this unexpected feature creates a big problem which is that the fluidity of touch. Even after cleaning the filter "hangs" and drag your finger on the screen will be rubbing noise. This is clearly not as nice as without filter. Nothing can be done, it is the material from which the filter is made that does this.
In conclusion, a very good deal, I did not need me to try several times during installation technique with "bathroom" + "holding scotch."
The price / quality ratio is very good, it's worth putting a little more, especially for our large-screen smartphone.