> Hello
> I was considering trying to use POV ray to compute illuminance values for a
> solar energy system. Can the povray output be used to determine illuminance,
> e.g. lumens/sqm or the like? Has anyone developed such methods?
> Thanks
> Jeremy
>
>

In a way...
Using the photons feature, you get acurate reflection of incomming light.
If you use a standard image format, part of the illumination can easily 
get clipped. You can circumvent that using some high dinamic range 
format like HDR or EXR.

If you place a screen at the correct place, you can get an image where 
the brightness is directly proportional to the illumination.
Using the animation feature, you can have that screen move, giving you a 
serie of sampling planes.

While the results may not be as acurate as you may want/hope, they will 
give you at least a reasonable estimate.



Alain

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