Optoma's HZ40 home entertainment projector offers laser lighting – unusual for a model at its £1,300 price. But John Archer finds this a mixed blessing

It's easy to see why some people think lasers are the future of projection. They can go exceptionally bright and can support an extended colour gamut. You don't have to replace them as you do normal projection lamps, and they're energy efficient. And they lose relatively little performance over their colossal lifetime.



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