| ??? 03/11/06 21:22 Read: times Msg Score: +1 +1 Informative |
#111999 - Correction curve Responding to: ???'s previous message |
Prahlad said:
Are you sure Erik percent power going to bulb [ Lamp ] has no correlation with percent light. AFAIK there exists a relation between percent power spent and percent light produced it may not be linearly proportional but their is a positive and srtrong correlation. Using a LUT one can control light precisely by power control. Yes, you are right. Lamp power versus phase angle is given by this curve:  To obtain a sufficiently linear brightness control of lamp many DMXs use about the following correction curve:  Note, that this curve is piece-wise linear. So, a look up table (LUT) need not necessarily to be used for the correction. Kai |
