With HDR I always have the problem that the light rays spread to much from the
picture. One of the results then is: No hard, sharp shadows...

If you would make an HDR picture with a chrome-ball from a sunny light
situation, casting sharp and hard shadows, you won't get a shadow like this in
your rendering.

So I decided to convert an HDR picture back into light sources that contains the
right color and intensity coming from the picture.

This picture contains 192 light sources as a hemisphere.

After playing with a view different HDRs, I decided to use one without a sharp
shadow - it was looking good.

Maybe some other day...

Holger :)

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