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However front projection has some obvious disadvantages as it is very sensitive to ambient light. The contrast level is directly dependent on the amount of ambient light striking the screen.
Using traditional (i.e. white) front projection the black parts of the images are not really black, but are perceived as such because hardly any light from the projector strikes these parts of the screen. The contrast will be diminished by the amount of ambient light striking the screen.
Since this Guide was first produced, dnp has now produced an ‘optical’ front projection screen – the dnp Supernova Screen. This revolutionary screen absorbs ambient light, remaining near black until projected light strikes it.