This will work there isn't some surprising flash or temporary increase in the light levels. I can understand why you'd want to do something like this for an installation work, but  for a performance, I would personally stick to manual calibration.

That said, excellent solution. ;-)

Best Wishes,
Mark

now it self-calibrates all the time. i put a heavy Smoother after this and it gives some nicely organic ramping values. also, adding a Comparator that triggers the reset of Max Value Hold when Calc Brightness goes to zero keeps it fresh. Thanks Mark.

There is no accuracy of loss by scaling. Your just re-ranging the numbers. As with all signals that you are amplifying, the noise in the signal will get amplified too. But you won't lose accuracy.

Best Wishes,
Mark

john

Well, I added that auto measure feature but I've never actually used it myself. I simply wouldn't trust something like that for a show because too many things can go wrong. I go through and manually calibrate my actors before every show. I actually always use a Limit Scale Value actor to scale the values, because I can easily access the min and max, etc.

Note that if the 'auto frames' input is 0 and you never trigger the 'auto measure' input, it won't do the measurement.

Best Wishes,
Mark