Fault on the image and poor optical quality

Seller to flee, then, who sells you the new so-called material and which is in fact the wrong occasion.

Furthermore the optical quality is poor. Can not have a clear image across the surface if it is short in the middle, it is unclear at the top or bottom. To improve this, we must use a particular angle between the projector and the screen, and compensating with the knob of keystone correction. There is only one combination of the angle display / projector and trapezoid compensation that provides an image almost watchable. I do not know if this problem was the fact that my copy was defective or if it is a "feature" of this model.