How about IES and photon map secondary? Try this: Place IES distribution luminaires in a scene. Take note of their candela values of the highest luminaire. Set Viz/Max Exposure to uncheck but set the Physical Scale to like 10. Set Photon Map for primary and secondary GI with check on convert to Irradiance map. Set it so it saves to a file and let it calculate.
Now set Secondary GI to Photon Map “From File” and Primary GI to Irradiance. Also set Viz/Max Exposure to Enabled Logarithmic and the Physical Scale to the candela value of your highest intensity luminaire. Render and that is that.
Have fun with it,
Ismael
Edit*********** Better set Physical Scale= Candela/100 ****
Got this old scene with 10 photometric luminaires and did this experiment:
Does not look too bad I think. Just recently got a new LCD monitor and not quite sure about that gamma thing, however I did use that new “Linear Worflow Curve…”.
Hopefully it uploads fine,
Ismael
It uploaded good! Used the photon sec as stated and “Very Low” Irradiance.
That whole thing was a test. I do not use photons or anything for that matter. Just render for fun and do enjoy seeing all the wonderful things all you guys create. However, a good point to take is that particular spinner while using ies lights and no Max exposure.
