That what I meant, a built in calibration arm/camera unit plus easily replacable panel w/o driver unit might have been a killer feature. But replaceable and App

That what I meant, a built in calibration arm/camera unit plus easily replacable panel w/o driver unit might have been a killer feature. But replaceable and Apple don't mix. To me this looks like a overengineered consumer device, with insane macro-scale part count and failures/uniformity issues just waiting to happen. Besides local contrast issues with in a LED driven pixel area and the borders between them. You can do this, but comparing it reference class seems quite the claim to live up to. The $40k Sony device mentioned is OLED btw. https://www.apple.com/105/media/us/pro-display-xdr/2019/1e439996-d014-462a-94d6-f67407717b60/overview/layers/large_2x.mp4 https://www.apple.com/105/media/us/pro-display-xdr/2019/1e43...