The native contrast (ON-OFF) contrast stays unchanged while projecting in a room optimized or with white walls AS LONG AS no other lights enter the room (windows, ceiling, candle, smartphone etc…)
The 1% white contrast drops a lot more in the “room with white walls” than in an optimized room. However,
if we compare the Benq W1070 and the Sony VPL-VW520ES, there is still quite a world between them, EVEN in the room with white walls.
In the optimized room: the Sony VPL-VW520ES has 6 times the contrast of the Benq W1070
In the room with white walls: the Sony VPL-VW520ES has still 2.5 times the contrast of the Benq W1070
For the 2% white contrast, the difference is still large between the “low end” and “very high end” projector even in a white room:
In the optimized room: the Sony VPL-VW520ES has 4.4 times the contrast of the Benq W1070
In the room with white walls: the Sony VPL-VW520ES has still 1.7 times the contrast of the Benq W1070
For the 5% white contrast, the difference is still large between the “low end” and “very high end” projector in an optimized room, but not so much in a white room:
In the optimized room: the Sony VPL-VW520ES has 2.9 times the contrast of the Benq W1070
In the room with white walls: the Sony VPL-VW520ES has 1.3 times the contrast of the Benq W1070
For the 10% white contrast, the difference is still large between the “low end” and “very high end” projector in an optimized room, but almost not existent in a white room:
In the optimized room: the Sony VPL-VW520ES has 2.1 times the contrast of the Benq W1070
In the room with white walls: the Sony VPL-VW520ES has 1.1 times the contrast of the Benq W1070
For the 20% white contrast, there is still a difference between the “low end” and “very high end” projector in an optimized room, but the contrast is the same in the white room (170:1):
In the optimized room: the Sony VPL-VW520ES has 1.6 times the contrast of the Benq W1070
In the room with white walls: the Sony VPL-VW520ES has 1.0 times the contrast of the Benq W1070
For the 50% white contrast, there is still a difference between the “low end” and “very high end” projector in an optimized room, but the ANSI contrast is the same in the white room (67:1):
In the optimized room: the Sony VPL-VW520ES has 1.6 times the contrast of the Benq W1070
In the room with white walls: the Sony VPL-VW520ES has 1.0 times the contrast of the Benq W107