Even more eye-catching than the full HD spec, though, is the HD1’s
claimed contrast ratio of 15000:1. This is the highest such figure we’ve
ever seen from a domestic projector, and amazingly it’s achieved without
any ‘dynamic iris’ trickery, whereby the image’s brightness is reduced
when dark scenes are detected to improve black level response. In other
words, you should be able to get high contrast and high brightness
simultaneously from the HD1: a fact that promises pictures of
unprecedented AV dynamism and range