DIALux is a very nice program but it has one problem (the open gl 3).
We thank you all for your programs. Thank you.
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It's very good and handy for lighting calculations.
Very useful for calculating.
adobe is verry benefic if you want to read video on intenet (youtube)
I'm an Electrical Engineer, it is a clear and useful guide in problems regarding illumination.
Video made by dialux
I Invite you to visit the following link regrading DIALux