Google describes it as equivalent of a 25" screen at 8 feet distance. I haven't made any exact measurements, but I wouldn't be surprised if the focal plane is i

Google describes it as equivalent of a 25" screen at 8 feet distance. I haven't made any exact measurements, but I wouldn't be surprised if the focal plane is in fact 8 feet. You certainly don't focus at the glass cuboid right in front of your eyes.