This new ViewSonic T4K753 is a lamp based projector. Therefore, its light source lifespan is realatively short, which is only 4000 hours. But if you keep it working under superEco mode, the lamp lifetime can be extended to 20000 hours.
It offer UHD 3840×2160 resolution powered by 0.47″ DMD chip. As for its throw ratio, it can be rated as short throw projector with throw ratio up to 1.13~1.47.
This ViewSonic Projector is very powerful, but in modern projector market, laser light source is gaining the popularity for it has more merits that lamp projector does not have. Laser Projectors like Dangbei Mars Pro, offers UHD 4K resolution and incredible 3200 ANSI Luemns, the most important thing is that Dangbei Mars Pro adopts ALPD laser technology, not only the lifespan is much longer (25000 hours), but alos much brighter.
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