Screens

What to look for

• Dead pixels: dots that stay black on white, red, green and blue.
• Stuck pixels: dots that stay one color on black.
• Light bleeding: bright patches near the edges on black. Dim the room for this one.
• Banding: visible steps in the gray fade instead of a smooth change.
• Sharpness: the fine checkerboard should look like even gray. Ripples or stripes mean the picture is being scaled.
• Edges: the outer line of the grid should be visible on all four sides.