Bios Magazine posted a review on the Sony VPL-EX50 Projector

Sony's VPL-EX50 delivers consistently bright images of up to 2500 ANSI lumens. Colours aren't as rich as a good home theatre projector, but the VPL-EX50 isn't designed for DVD and Blu-Ray playback (4:3 native aspect ratio and 900:1 contrast ratio aren't great assets). Sharpness is fantastic, and its features are well conceived, making the VPL-EX50 an excellent projector for use in small to medium-sized venues. The front-inclined design helps achieves optimal image placement, and a short throw distance is perfect if space is limited. As a bonus, the new E-series projector is also easy to maintain, with a long-life filter that is timed to coincide with when the lamp needs to be replaced (around 3000 hours), reducing the number of maintenance sessions required.

Sony VPL-EX50 Projector Review