Le 02/01/2013 19:53, handos nous fit lire :
> Hi everyone,
> 
> I am wondering if it possible to quantify the lighting in the POVRay scene in
> lumens? Is there a variable in the scene I can access or is it just the average
> Irradiance values observed at the pixels? Could someone send pointers to that
> please?

You would want a gamma of 1.0; And probably diffuse 1, ambient 0 on your
target surface. (which might rules out any complex scene with reflection)

Notice that there is no notion of distance for one pov unit. (can be
meter, kilometer, millimeter, miles, yards or what ever).

You would need to adjust the light_source to have fade_distance &
fade_power.
Spherical light source are easy, as well as far far away sun... but
conical ones are more difficult. Also read in details:

> http://wiki.povray.org/content/Documentation:Light_Source

Post a reply to this message