ADL Contrast Calculatorbeta

What it does. Most projectors are only measured two ways: On/Off (a full black frame against a full white one) and ANSI (a checkerboard). Real scenes sit somewhere in between, and the contrast you actually see depends on how much of the picture is lit. That's ADL, the average display level. The calculator takes the numbers you have and fills in the rest of the curve, so you can see how the projector should behave from dark scenes to bright ones.

On/Off and ANSI are enough to start. If you also have 1% or 5% ADL measurements, add them and the curve gets closer to reality. Hit Example to see two measured curves from the Titan Noir Max In-Depth Review.

How the estimate works

The curve is interpolated in log space directly through every value you enter (On/Off, 1% ADL, 5% ADL, ANSI) so it always passes exactly through your measured points. Gaps between points are interpolated and the tail beyond your last point is extrapolated from the local slope. The result is an estimate; real-world ADL behaviour can deviate, especially on projectors with aggressive dynamic iris.