Created attachment 243080 [details]
video

When I manually lock the screen we turn off the backlight. This is good. However the way we do it looks very unpolished. There are a couple reasons for this. The first is that the timing of the backlight going off is poorly sync'd with the lowering of the curtain. It seems to blank as soon as the curtain completes the fall. This isn't good because it links the two events but doesn't link them in a way that feels right. It would be better to either blank right away and skip the animation, allow the animation to complete and blank after "taking a beat", or to animate the blank and lowering at the same time.

In addition to this the backlight turns off very suddenly and this looks abrupt and discontinuous, and unpolished.

My recommendation is to:

 * Lower the shield with an animation (to provide feedback on the lock action)
 * Take a beat
 * Quickly animate the brightness to zero (just enough to round off the edge of the discontinuity)