The OPTOMA's X512 projector with 5000 lumens produces XGA resolution images for sharper, clearer images and presentations. This projector can use digital horizontal and vertical keystone to change the contour of an image so that it has an appropriate rectangular shape on both sides. Even better, the 4-corner adjustment can eliminates any crooked or distorted images in off-angle or restricted space installations by independently adjusting each corner of the screen for that perfect picture.