- How close must it be to the wall for a big image?
- The 0.496 throw ratio means roughly half a meter of distance per meter of image width. A 100-inch diagonal picture needs the projector about 1.1 meters from the screen.
- Is 4,200 lumens enough for a bright room?
- Yes for most classrooms and meeting rooms with blinds partly open. In direct sunlight or full daylight you will still want to dim the room or use a high-gain screen.
- Do I ever need to replace the light source?
- No lamp changes. The laser is rated for 30,000 hours in Eco mode, which covers years of typical use; brightness slowly declines over that life.
- Does it support 4K input?
- It accepts a 4K signal over HDMI and downscales it to its native 1920x1080 panel. Output is always 1080p, not 4K.
- What is in the box?
- The projector, power cable, HDMI cable and remote control. A carry case and mounting hardware are not included.
- Can I mount it on the ceiling?
- Yes, it has ceiling-mount holes and supports front, rear and ceiling projection. There is no lens shift, so aim carefully during installation.
- Where is the ViewSonic LS711HD cheapest?
- At Staples, for $1,399.99, as of our latest check.
- Where can I buy the ViewSonic LS711HD?
- 3 stores we checked sell it, including eBay, Staples, Office Depot.