Maximum Brightness 100 vs 400

[Gary]

I see that Brightness in the Colors window defaults to a value of 100 (which implies maximum brightness), but the slider goes all the way to 400. I read somewhere that any brightness above 100 is clipped.

What's the reason for this? Some sort of legacy and/or backwards compatibility thing?

Can it be used for an override where if you set up a dimming curve on a model in the layout tab to a maximum brightness of 80, you can occasionally have a bit of extra "oomph" to 100% for something special like a beat in a grand finale?

[sean]

100 does not mean that your lights are at maximum brightness it means that the rgb calculation is left alone. After calculating an effect all pixels are multiplied by the brightness value. If 100% then everything is multiplied by 1.0, if 300% then everything is multiplied by 3.0, if 50% then by 0.5. I put this slider in 2013 so u could increase brightness on pictures or movies. This is when u have a dark scene and want it brighter. It can also be used to darken effects that are too bright. A butterfly effect has a 255 value on every pixel, use brightness of say 70% to dim it down. Another use is reducing current draw of your show. Use 50% and the max rgb value for brightness will be 127 (255x0.5). Most people do not notice this reduction. Nite, since 2013 we have added brightness curves at the model level. Set 50% on your megatree and it is adjusted for all sequences, all effects. The brightness slider us on a per effect basis.


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[djmc2002]

Do you lower the brightness off an entire model inside xlight on the dimming curve setting? If so what level do most use? Also if I have lowered the brightness number on each effect is this a further lowering from the say -25 I set on the model? Say I have 80% set on the effect is this 80% of the 75% set in at the model level for in this case a actual level of 60%?

[jnealand]

Gil posted in facebook, that the brightness values are cumulative.  so 80% x 75%.